Hydration of an alkyne, C6H10. gave two ketones in approximately equal amounts. Which of the following alkynes would be expected to give these results? Multiple Choice a. 3-hexyne b. 1-hexynec. 2-hexyned. 3,3-dimethyl-1-butyne

Answers

Answer 1

The correct answer is option c. 2-Hexyne which is explained in the below section.

Alkynes are immiscible in water. They do now no longer react with water beneathneath regular conditions. Alkynes can also additionally react with water withinside the presence of dilute sulphuric acid and mercuric sulphate at a temperature of 333K. This effects withinside the formation of carbonyl compounds. This effects withinside the formation of carbonyl compounds. The addition of water to a triple bond, like the corresponding addition to a double bond, is called hydration. The hydration of alkynes gives ketones

 

Thus, the correct option is c.

To learn more about Alkynes check the link below-

https://brainly.com/question/22933069

#SPJ4


Related Questions

5. In the iodination of salicylamide, what reagent was acting as the nucleophile in this reaction? a. NaOCl c. Salicylamide e. Ethanol b. NaI d. Na2S2O3

Answers

According to the question In the iodination of salicylamide, the nucleophile is NaI.

What is salicylamide?

Salicylamide is a chemical compound that is related to aspirin and is used in a number of over-the-counter medications. It is an aromatic, white, crystalline solid that is slightly soluble in water. Salicylamide is used to reduce fever and pain, and is also used topically to treat skin irritations, such as sunburn and insect bites. In combination with other drugs, salicylamide is also used to treat a variety of conditions, including arthritis, headaches, and fever. It is also used in some cosmetic creams and shampoos. Salicylamide is generally considered safe and non-toxic when taken as directed. However, it can cause some side effects, such as stomach upset, nausea, and dizziness.

NaI acts as a source of iodide ions which can react with salicylamide to form the iodinated product. NaOCl, salicylamide, ethanol, and [tex]Na_2S_2O_3[/tex] are not acting as nucleophiles in this reaction.

Therefore the correct option is B.

To learn more about salicylamide

https://brainly.com/question/26722892

#SPJ4

The amount of a sample remaining after t days is given by the equation mc001-1. Jpg, where a is the initial amount of the sample and h is the half-life, in days, of the substance. A scientist has a 10-mg sample of a radioactive isotope. The isotope has a half-life of 8 days. After 16 days, how much of the radioactive isotope remains?.

Answers

The amount of the radioactive isotope remaining after 16 days is 2.5 mg

The amount of the radioactive isotope remaining after 16 days can be calculated using the formula:

A = a*(1/2)^(t/h)

where A is the amount remaining, a is the initial amount, t is the time elapsed, and h is the half-life of the substance.

In this case, we have an initial amount of 10 mg and a half-life of 8 days. Therefore, we can plug in these values into the formula to get:

A = 10*(1/2)^(16/8)
A = 10*(1/2)^2
A = 10*(1/4)
A = 2.5 mg

So, after 16 days, only 2.5 mg of the radioactive isotope remains.

Thus, the amount of the radioactive isotope remaining after 16 days is 2.5 mg.

To know more about radioactive isotope, click here

https://brainly.com/question/28039996

#SPJ11

enter the chemical formula for the anion present in the aqueous solution of cu(c2h3o2)2 . express your answer as a chemical formula. do not include coefficients or phases in your response.

Answers

The anion present in the aqueous solution of [tex]Cu(C_2H_3O_2)_2[/tex] is [tex]C_2H_3O^{2-[/tex].

What is anion?

Anion is an atom or group of atoms that has gained one or more electrons, giving it a net negative charge. Anions are formed when an atom gains electrons due to an imbalance in the atom’s outermost electron shell. By gaining electrons, the atom becomes more stable and is able to bond with other atoms. These bonds form molecules and compounds.

This is because the compound [tex]Cu(C_2H3O_2)_2[/tex] is a salt composed of positively charged Cu²⁺ ions and negatively charged [tex]C_2H_3O^{2-[/tex] ions. Since the compound dissolves in water, the ions separate from each other and the [tex]C_2H_3O^{2-[/tex] anion remains in the aqueous solution.

To learn more about anion

https://brainly.com/question/14309645

#SPJ4

How many milliliters of hcooh and hcoona would you use to make approximately a liter of the buffer?.

Answers

The exact amounts of HCOOH and HCOONa needed depend on the desired pH and the buffer capacity of the solution.



A buffer solution is prepared by mixing a weak acid (HCOOH) and its conjugate base (HCOONa).

To determine the specific amounts of each component needed, you should use the Henderson-Hasselbalch equation: pH = pKa + log ([A-]/[HA]), where [A-] is the concentration of the conjugate base (HCOONa) and [HA] is the concentration of the weak acid (HCOOH).

Knowing the desired pH and the pKa of formic acid (approximately 3.75), you can calculate the ratio of [A-] to [HA]. Then, adjust the concentrations accordingly to achieve a total volume of approximately 1 liter.


Summary: The required amounts of HCOOH and HCOONa to make a liter of buffer depend on the desired pH and buffer capacity. Utilize the Henderson-Hasselbalch equation to determine the correct ratio and concentrations of each component.

Learn more about Henderson-Hasselbalch equation click here:

https://brainly.com/question/13423434

#SPJ11

which substance(s) below will exhibit hydrogen bonds between molecules? i. nh3 ii. ch3ch2och2ch3 iii. ch3oh iv. ch2f2 v. h2se

Answers

The main answer is that the substances that will exhibit hydrogen bonds between molecules are NH3 (i) and CH3OH (iii).

Hydrogen bonding occurs when a hydrogen atom is covalently bonded to a highly electronegative atom (such as nitrogen, oxygen, or fluorine) and is also attracted to another highly electronegative atom in a neighboring molecule.

In the given substances, NH3 has a hydrogen atom bonded to a nitrogen atom, and CH3OH has a hydrogen atom bonded to an oxygen atom.

Both nitrogen and oxygen are highly electronegative, allowing for the formation of hydrogen bonds.


Summary: Among the given substances, NH3 (i) and CH3OH (iii) are the ones that will exhibit hydrogen bonds between molecules due to the presence of hydrogen atoms bonded to highly electronegative atoms (nitrogen and oxygen, respectively).

Learn more about molecules click here:

https://brainly.com/question/475709

#SPJ11

If this volume of water is in a cubic tank, what is the pressure at the bottom?.

Answers

The pressure at the bottom of a cubic tank filled with water depends on the height of the water column and the density of water.


The pressure at the bottom of a cubic tank filled with water can be calculated using the formula P = ρgh, where P is the pressure, ρ is the density of water, g is the acceleration due to gravity, and h is the height of the water column. Since the tank is cubic, the height of the water column is equal to the length of one side of the tank.

For example, if the tank is 1 meter long and filled with water, the height of the water column is also 1 meter. The density of water is approximately 1000 kg/m³ and the acceleration due to gravity is approximately 9.81 m/s². Using these values, the pressure at the bottom of the tank can be calculated by multiplying the height of the water column by the density of water and the acceleration due to gravity. Therefore, the pressure at the bottom of the tank in this example would be 9810 Pa or 9.81 kPa.

Learn more about pressure here:

https://brainly.com/question/12971272

#SPJ11

The reaction rate constant is determined to be 0. 012 m-1 s-1. If after 27 minutes the amount of a left is 0. 048 m. What was the initial concentration of a?.

Answers

The initial concentration of reactant A was approximately 3.23 M. The reaction rate constant, is an essential factor in determining the rate of a chemical reaction.

In this case, the given reaction rate constant (k) is 0.012 m⁻¹ s⁻¹. To find the initial concentration of the reactant A, we'll use the integrated rate law equation for a first-order reaction: ln[A] = ln[A₀] - kt, where [A] is the final concentration, [A₀] is the initial concentration, k is the rate constant, and t is the time in seconds.

First, we need to convert the given time of 27 minutes into seconds: 27 minutes * 60 seconds/minute = 1620 seconds.

Now, plug in the given values into the integrated rate law equation:

ln[0.048 M] = ln[A₀] - (0.012 m⁻¹ s⁻¹)(1620 s)

Next, solve for ln[A₀]:
ln[A₀] = ln[0.048 M] + (0.012 m⁻¹ s⁻¹)(1620 s)

Calculate the result:
ln[A₀] ≈ 1.173

To find the initial concentration [A₀], take the exponent of both sides:
A₀ = [tex]e^{1.173}[/tex]

Calculate the initial concentration:
A₀ ≈ 3.23 M

Therefore, the initial concentration of reactant A was approximately 3.23 M.

Learn more about rate constant here:

https://brainly.com/question/31742254

#SPJ11

0. In the addition of the HBr to butadiene, which product is the product of kinetic control?
. 1,4-dibromo-2-butene b. 1-bromo-3-butene c. 1-bromo-2-butene d. 3-bromo-1-butene e. 1,2-dibromo-3-butene

Answers

The product of kinetic control in the addition of HBr to butadiene is 1-bromo-2-butene. This is the product that is formed more quickly due to the faster reaction rate.

What is butene?

Butene is an alkene, a hydrocarbon molecule composed of two carbon atoms and four hydrogen atoms connected in a double bond. Butene is a colorless, odorless gas with a boiling point of -4.4°F (-20°C). It is highly flammable and can be converted into a wide variety of useful products. It is found in petroleum and is used to make a variety of industrial chemicals and materials. Butene is used as a feedstock to make ethylene, which is used to create polyethylene and other plastic products.

The other products, including 1,4-dibromo-2-butene, 1-bromo-3-butene, 3-bromo-1-butene, and 1,2-dibromo-3-butene, are formed through a slower reaction rate, and are thus the products of thermodynamic control.

To learn more about butene

https://brainly.com/question/29752569

#SPJ4

draw the products formed when phenylacetic acid (c6h5ch2cooh) is treated with the following reagent. socl2

Answers

The product so formed for the given chemical reaction is  C₆H₅CH₂COCl.

When phenylacetic acid (C₆H₅CH₂COOH) is treated with SOCl₂, it results into  phenylacetyl chloride.

The chemical reaction is depicted as follows-

C₆H₅CH₂COOH + SOCl₂ → C₆H₅CH₂COCl

An acyl chloride (or acid chloride) is an organic compound with the functional group −C(=O)Cl. Their formula is usually written R−COCl, where R is a side chain. They are reactive derivatives of carboxylic acids (R−C(=O)OH). A specific example of an acyl chloride is acetyl chloride, CH₃COCl. Acyl chlorides are the most important subset of acyl halides.

To learn more about carboxylic acids  check the link below-

https://brainly.com/question/26855500

#SPJ4

Which part of a food chain ends up with the HIGHEST toxicity levels from BIOMAGNIFICATION?

Producers
Top Predators
Primary Consumers
Decomposers

Answers

The process through which harmful substances and contaminants gradually build up in an organism's tissues is known as bioaccumulation. The right response is 2.

In a process known as biomagnification, the concentration of poisonous substances in animals' bodies rises as their reliance on prey increases. At the top of the food chain, top predators like eagles, sharks, and polar bears eat other animals that have already stored poisonous material in their bodies through bioaccumulation. In contrast to organisms at lower trophic levels, top predators will therefore have higher concentrations of poisonous chemicals in their tissues, making them more vulnerable to adverse health effects. Therefore, choice 2 is accurate.

To know more about Bioaccumulation, here

brainly.com/question/131305

#SPJ1

--The complete Question is, Which part of a food chain ends up with the HIGHEST harmful levels from BIOMAGNIFICATION?

1. Producers

2. [tex]Top\ Predators[/tex]

3. Primary Consumers

4. Decomposers

--

Refer to Exhibit 21-4. What value goes in blank (A)?Units of Good Consumed: 12345Total Utility (utils):40(A)-----75(B)-----95100(D)Marginal Utility (utils):403520(C)-----102

Answers

Value of units consumed at a total utility of 75 with given marginal utility and total utility values is 22,655.

What is the value of units consumed at a total utility of 75 with given marginal utility and total utility values?

The value that goes in the blank (A) is 55.

This is because the total utility increases from 40 to 75 as the units of good consumed increase from 12,345 to 15,000, which means that the additional utility gained from consuming the last 2,655 units of the good is 35 utils. Therefore, the marginal utility of the good is 35 utils divided by the number of additional units consumed, which is 2,655 - 12,345 = 10,310 units.

So, Marginal Utility (MU) = Additional Utility / Additional Units Consumed

MU = 35 / 10,310 = 0.00339 utils per unit

To find the point where the total utility reaches 75, we can use the following equation:

Total Utility = Total Utility at (A) + Additional Utility

75 = 40 + Additional Utility

Additional Utility = 35

We already know that the marginal utility is 0.00339 utils per unit, so we can use that to find the additional units consumed to reach 75 total utility:

Additional Utility = MU x Additional Units Consumed

35 = 0.00339 x Additional Units Consumed

Additional Units Consumed = 10,310

Therefore, the value in the blank (A) is 12,345 + 10,310 = 22,655.

To learn more about Utility, visit: https://brainly.com/question/28263537

#SPJ4

which statement is true for an electrochemical cell built from an oxidation-reduction reaction if k for the reaction is greater than 1?

Answers

If the equilibrium constant (k) for an oxidation-reduction reaction in an electrochemical cell is greater than 1, then the reaction will proceed to completion and the cell will have a positive standard cell potential (E°).

In simpler terms, a high k value means that the products of the reaction are favored over the reactants, which drives the reaction forward and produces a higher voltage. Therefore, the electrochemical cell will have a high efficiency and be more useful for producing electrical energy.

In conclusion, the truth for an electrochemical cell built from an oxidation-reduction reaction with k greater than 1 is that the reaction will be favorable and the cell will have a positive standard cell potential, making it more efficient for producing electrical energy.

To know more about electrochemical visit

https://brainly.com/question/31606417

#SPJ11

Which of the following are not monoprotic acids? (select all that apply) Select all that apply: A.ÐÐ B.H3PO4 C. CH3CO2H D. H2C204 E> OHS

Answers

According to the question the Chromic acid ([tex]H_2CrO_4[/tex]) is not monoprotic acids.

Define monoprotic acids?

Since mono means "one," a monoprotic acid is an acid that can only donate one proton. One hydrogen ion or many hydrogen ions may exist in a monoprotic acid. However, only one will be given as a response. A chromium oxoacid is chromic acid. As an oxidizing agent, it plays a part. It is a hydrogen chromate's conjugate acid. Chromic acid is a fairly weak acid, and even acetic acid can dissociate its salts. It should never be used in conjunction with alcohol or formalin due to its high oxidizing effect and self-reduction to [tex]CrO_3[/tex].

[tex]H_2CrO_4[/tex] (Carbonic acid) is a diprotic acid, meaning that it can donate two protons (hydrogen ions). Therefore, it is not a monoprotic acid.


To learn more about conjugate acid use:
https://brainly.com/question/12584785
#SPJ4

chn analysis for a compound shows 81.04% c, and 8.16% h. what is the molecular formula and ihd (degrees of unsaturation) for this compound? (masses of elements are as follows: h

Answers

The molecular formula of the compound is likely C₁₀H₁₀N₂. IHD for the compound is 9. This indicates the presence of nine rings or double bonds in the molecule.



Assuming a 100 g sample of the compound, we have:
- Mass of carbon = 81.04 g
- Mass of hydrogen = 8.16 g

We can convert these masses into moles by dividing them by their respective atomic masses:
- Moles of carbon = 81.04 g / 12.01 g/mol = 6.746 mol
- Moles of hydrogen = 8.16 g / 1.01 g/mol = 8.079 mol

Next, we need to find the simplest whole number ratio of these moles. We can do this by dividing both values by the smallest one (in this case, 6.746 mol):
- Carbon: 6.746 mol / 6.746 mol = 1
- Hydrogen: 8.079 mol / 6.746 mol = 1.198

To get whole number values, we can multiply both values by 5 (the closest whole number to 1.198):
- Carbon: 1 x 5 = 5
- Hydrogen: 1.198 x 5 = 5.99 ≈ 6

Therefore, the empirical formula of the compound is CH₅N. To find the molecular formula, we need to know the molar mass of the compound. Let's assume it's 85 g/mol (this is just a guess, but we can adjust it later if needed).

The empirical formula has a total atomic mass of 13.01 g/mol (12.01 g/mol for carbon and 1.01 g/mol for hydrogen). To calculate the molecular formula, we can divide the molar mass by the empirical formula mass and multiply each subscript by the result:
- C₅H₅N (molar mass = 79 g/mol)
- C₁₀H₁₀N₂ (molar mass = 162 g/mol)
- C₁₅H₁₅N₃ (molar mass = 245 g/mol)
- ...

Checking the molar mass of each candidate, we see that C₁₀H₁₀N₂ has a molar mass close to our guess of 85 g/mol. Therefore, the molecular formula of the compound is likely C₁₀H₁₀N₂

To calculate the IHD (degrees of unsaturation), we use the formula:
IHD = (2n + 2) - m - (0.5a + b)
where n is the number of carbons, m is the number of hydrogens, a is the number of nitrogen, and b is the number of halogens (which is 0 in this case).

For C₁₀H₁₀N₂, we have:
- n = 10
- m = 10
- a = 2

Plugging these values into the formula, we get:
IHD = (2 x 10 + 2) - 10 - (0.5 x 2 + 0) = 10 - 1 - 0 = 9

Therefore, the IHD for the compound is 9. This indicates the presence of nine rings or double bonds in the molecule.

To know more about molecular formula, refer

https://brainly.com/question/15960587

#SPJ11

How many molecules of H2 are required to completely react with six molecules of N2?

Answers

Assuming a balanced chemical equation:

N2 + 3H2 → 2NH3

The equation shows that for every 3 molecules of H2, 1 molecule of N2 can react to form 2 molecules of NH3.

So, to react with 6 molecules of N2, we need:

(6 molecules N2) x (3 molecules H2 / 1 molecule N2) = 18 molecules of H2.

Therefore, we need 18 molecules of H2 to completely react with 6 molecules of N2.

To know more about mole concept, click here:-

https://brainly.com/question/31123980

#SPJ11

Does the plastic need to absorb, reflect, or transmit light in order for it to change?

Answers

Some types of plastics can change their properties, such as shape, color, or electrical conductivity, due to changes in temperature, pressure, or chemical environment. No, the change in plastic does not necessarily depend on its ability to absorb, reflect, or transmit light.

For example, shape-memory polymers can change their shape in response to temperature changes, without requiring any interaction with light. Similarly, electrochromic polymers can change their color or transparency in response to an electric field, without the need for light absorption. Therefore, the ability of a plastic to change depends on its intrinsic properties and its response to external stimuli, rather than its optical properties.

To know more about electrical conductivity, here

brainly.com/question/31668005

#SPJ1

calculate the required concentration of an ion for precipitation, given concentration of the other ion.

Answers

The required concentration of an ion for precipitation can be calculated using the solubility product constant (Ksp) equation.

The Ksp equation relates the concentrations of the ions in a saturated solution with the solubility product constant. For a general ionic compound, AB, the Ksp equation is:

Ksp = [A+]x[B-]y

Where [A+] and [B-] are the molar concentrations of the ions in solution, and x and y are the stoichiometric coefficients for A and B in the balanced chemical equation.

If we are given the concentration of one of the ions (let's say [A+]), we can use the Ksp equation to solve for the required concentration of the other ion ([B-]) for precipitation to occur. To do this, we need to rearrange the Ksp equation to solve for [B-]:

[B-] = Ksp / [A+]x

Where Ksp is the solubility product constant for the compound.

Therefore, the required concentration of an ion for precipitation can be calculated using the solubility product constant equation by rearranging it to solve for the concentration of the other ion, given the concentration of one of the ions.

To know more about concentration , visit;

https://brainly.com/question/28564792

#SPJ11

What is the pH of a solution which has a hydroxide ion concentration of 2.5 x 10-2M?
a. 1.24 b. 1.60 c. 3.69 d. 10.31 e. 12.40

Answers

To determine the pH of a solution with a given hydroxide ion concentration, we need to use the equation for the ion product constant of water (Kw) which is equal to 1 x 10^-14 at 25°C.

Kw = [H+][OH-]

Rearranging the equation, we can solve for the pH:

pH = -log[H+]

[H+] = Kw / [OH-] = (1 x 10^-14) / (2.5 x 10^-2) = 4 x 10^-13

pH = -log(4 x 10^-13) = 12.40

Therefore, the pH of the solution is e. 12.40.

This means that the solution is basic since the pH is greater than 7. A pH of 12.40 indicates that the solution is highly basic or alkaline, which means that it has a high concentration of hydroxide ions (OH-).

A higher concentration of hydroxide ions means that the solution is more likely to accept protons (H+) and can therefore neutralize acids. It is important to note that maintaining the proper pH balance is important for many chemical reactions and biological processes in the body.

To know more hydroxide ions (OH-) click this link-

brainly.in/question/44437127

#SPJ11

Explain the unusual integration pattern for the nmr? (Oxidation)

Answers

Unusual integration pattern in NMR due to oxidation results in the appearance of multiple peaks for a particular type of proton.

What is the unusual integration pattern in NMR due to oxidation?

The unusual integration pattern in nuclear magnetic resonance (NMR) spectra that can arise due to oxidation typically involves the appearance of multiple peaks for a particular type of proton. This often occurs when a molecule has undergone an oxidative reaction, such as when a primary alcohol is oxidized to an aldehyde or carboxylic acid.

In these cases, the different proton environments in the molecule may experience different degrees of oxidation, leading to the formation of multiple types of protons with different chemical shifts. These protons will then appear as separate peaks in the NMR spectrum, each with its own integration value reflecting the number of protons in that environment.

For example, if a primary alcohol is oxidized to an aldehyde, the proton on the carbon next to the carbonyl group (the alpha carbon) will experience a greater degree of oxidation than the other protons in the molecule, resulting in the appearance of two peaks in the NMR spectrum instead of the usual single peak. The peak corresponding to the alpha proton will typically be smaller and shifted upfield compared to the peak(s) corresponding to the other protons.

Overall, the unusual integration pattern in NMR due to oxidation can provide valuable information about the chemical environment and reactivity of a molecule.

To learn more about oxidation, visit: https://brainly.com/question/13182308

#SPJ4

A sample of carbon dioxide that initially occupies 15. 0 dm3

Answers

The volume at which the gas must be compressed is 17.6 dm³, under the condition that a sample of carbon dioxide that initially occupies 15.0 dm³ at 250 K and 1.00 atm.

For the given case, we are given that the initial volume of carbon dioxide is 15.0 dm³ at 250 K and 1.00 atm and that it undergoes an isothermal compression. Its entropy decreases by 10 J/K.

Now to find the final volume of carbon dioxide, we can apply the formula ΔS = -Q/T = nR ln(V2/V1)
Here
n = number of moles of carbon dioxide,
R = gas constant,
V1 and V2 = initial and final volumes of carbon dioxide respectively .

So ,ΔS = -10 J/K, we can evaluate for V2

V2 = V1 exp(-ΔS/nR)

Here exp() denotes the exponential function.

Staging values

V2 = (15.0 dm³) exp(-(-10 J/K)/(8.314 J/(mol K) × 250 K))

V2 ≈ 17.6 dm³

Therefore, into what volume must the gas be compressed to reduce its entropy is approximately 17.6 dm³.


To learn more about entropy

https://brainly.com/question/30481619
#SPJ4
The complete question is
A sample of carbon dioxide that initially occupies 15.0 dm3 at 250 K and 1.00 atm is compressed isothermally. Into what volume must the gas be compressed to reduce its entropy by 10.0 J K-1?

A chemist titrates 110.0mL of a 0.0516M nitric acid HNO3 solution with 0.3578M NaOH solution at 25°C . Calculate the pH at equivalence. Round your answer to 2 decimal places

Answers

The pH at equivalence is 7.00.

At equivalence, the moles of H⁺ from HNO₃ will be equal to the moles of OH⁻ from NaOH. This means that the solution will be neutral, and the pH will be equal to 7.

To calculate the number of moles of HNO₃, we can use the formula:

moles = concentration × volume

moles of HNO₃ = 0.0516 mol/L × 0.1100 L = 0.00568 mol

Since the stoichiometric ratio of HNO₃ to NaOH is 1:1, we know that 0.00568 moles of NaOH will be required to reach equivalence.

To calculate the volume of NaOH needed, we can use the formula:

moles = concentration × volume

0.00568 mol = 0.3578 mol/L × volume

volume of NaOH = 0.0159 L = 15.9 mL

Since we know that the solution is neutral at equivalence, the pH will be 7.00.

To know more about pH at equivalence, refer here:

https://brainly.com/question/16985108#

#SPJ11

*Why does gasoline feel cooler on your skin than H2O?

Answers

For lower specific heat capacity gasoline feel cooler on your skin than [tex]H_2O[/tex]

Gasoline has a lower specific heat capacity than water. Specific heat capacity is the quantity of heat required to raise the temperature of a substance by one degree Celsius. So,Gasoline feels cooler on our skin than water. Water has a high specific heat capacity . So,it requires more heat to increase its temperature than gasoline.

When we touch gasoline which absorbs the heat from our skin more quickly than water would which makes it feel cooler to the touch.

Learn more about gasoline here,

https://brainly.com/question/24353331

#SPJ4

there are some minor peaks displaying doublet coupling patterns at 6.3 ppm and 7.2 ppm. measure the coupling constant between these peaks. what minor byproduct from the reaction could be responsible for these peaks?

Answers

The minor byproduct from by the reaction that could be responsible for these peaks are the compounds containing the aromatic or the conjugated protons.

By comparing the chemical shifts and the coupling patterns with the known compounds and that could be formed by the reaction. Also considering the reaction conditions that the starting materials. The minor peaks at the 6.3 ppm and the 7.2 ppm with the doublet coupling patterns is due to the byproduct containing the aromatic or the conjugated protons.

The Proton nuclear magnetic resonance are for the nuclear magnetic resonance in the NMR spectroscopy with the respect to the hydrogen-1 nuclei.

To learn more about NMR spectroscopy here

https://brainly.com/question/31594990

#SPJ4

Solid carbon dioxide called dry ice is useful in maintaining frozen foods because it vapourizes to CO2(g) rather than melting to a liquid. How many kilograms of dry ice can be produced from 5.00×103L CO2(g) measured at STP ? ​

Answers

According to the question the Mass of dry ice is 7.92 kg.

What is Mass?

Mass is a fundamental measure of matter that is used to describe the amount of matter contained in an object. It is measured in grams (g) or kilograms (kg) and is a scalar quantity, meaning that it is unaffected by an object's position or orientation. Mass is an intrinsic property of matter, which means that it is an inherent property, and it is invariant, meaning that it does not change with time or location.

The amount of dry ice produced from 5.00 x 103L of CO₂(g) at STP can be calculated using the ideal gas law. The ideal gas law states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

Since the volume, pressure, and temperature are given, we can rearrange the equation to solve for n, the number of moles of CO₂(g):

n = PV/RT

n = (101.325 kPa)(5.00 x 103 L)/(8.314 J/mol K)(273.15 K)

n = 0.18 mol CO₂(g)

To calculate the mass of dry ice produced from this volume of CO₂(g) at STP, we can use the molar mass of CO₂, 44.01 g/mol, to convert from moles to grams:

Mass of dry ice = 0.18 mol CO₂(g) x 44.01 g/mol

Mass of dry ice = 7.92 kg

To learn more about Mass

https://brainly.com/question/24191825

#SPJ4

What type of change has occurred when a nail rusts?A physical changeA chemical changeAn atomic changeA reactive change

Answers

The type of change that occurs when a nail rusts is a chemical change. This is because the iron in the nail reacts with the oxygen in the air and forms iron oxide (rust) which is a new substance with different properties than the original nail.

This is different from a physical change, which would only change the appearance or state of the nail without creating a new substance. An atomic change refers to changes in the structure of the atom itself, and a reactive change is not a scientific term. Therefore, the main answer to your question is a chemical change, and this is because the iron in the nail reacts with the oxygen in the air to form a new substance.

learn more about chemical change

https://brainly.com/question/1222323

#SPJ11

A solution of 1.5M lactic acid/0.1M sodium lactate has a pH of: (A) 2.67. (B) 3.24. (C) 4.98. (D) 3.85. (E) 4.02. (F) 5.96. (G) 5.17. (H) 6.03.

Answers

Therefore, the pH of the solution is 3.24

The dissociation of lactic acid can be represented as follows:

C3H6O3(aq) + H2O(l) ⇌ C3H5O3^-(aq) + H3O^+(aq)

The equilibrium constant expression for this reaction is:

Ka = [C3H5O3^-][H3O^+]/[C3H6O3]

The sodium lactate dissociates in solution to form lactate ions and sodium ions, but we can assume that the concentration of lactate ions is equal to the initial concentration of sodium lactate since it's a weak base.

Since lactic acid is a weak acid, we can use the Henderson-Hasselbalch equation to calculate the pH of the solution:

pH = pKa + log([C3H5O3^-]/[C3H6O3])

The pKa of lactic acid is 3.86.

Substituting the given concentrations into the equation, we get:

pH = 3.86 + log(0.1/1.5) = 3.24

Therefore, the pH of the solution is 3.24, and the answer is (B).

To know more about pH click here:

https://brainly.com/question/491373

#SPJ11

Which object occupies the greatest amount of space?.

Answers

A. Hercules-Corona Borealis Great Wall is the object occupies the greatest amount of space.

What is object ?

Objects are entities that have properties and characteristics, and which can be manipulated, interacted with, and observed. Objects are the fundamental building blocks of computer programming and can be used to represent anything from physical entities such as cars, people and animals, to abstract concepts such as numbers and words.

A. Hercules-Corona Borealis Great Wall is the largest known galaxy structure in the universe, occupying an estimated 10 million cubic light-years of space. It is larger than the Milky Way, Andromeda, and Sombrero Galaxy, making it the object that occupies the greatest amount of space.

To learn more about object

https://brainly.com/question/19491767

#SPJ4

Complete Question:
Which object occupies the greatest amount of space?.

A. Hercules-Corona Borealis Great Wall

B. Milky Way

C. Andromeda

D.Sombrero Galaxy

What is the effect on the concentration of ammonia, hydroxide ion, and ammonium ion when the following are added to a basic buffer solution of equal concentrations of ammonia and ammonium nitrate: (a) KI (b) NH3 (c) HI (d) NaOH (e) NH4C

Answers

a) KI: Adding KI does not affect the concentration of ammonia, hydroxide ion or ammonium ion.

What is concentration?

Concentration is the act of focusing attention on a single object or thought. It is a mental process that requires effort and sustained focus, and it can be developed through practice and repetition. Concentration is a key element of success in many areas of life, from academic and professional pursuits to hobbies and leisure activities. It can help to improve productivity, increase efficiency, and ultimately lead to greater success and satisfaction.

b) NH₃: Adding NH₃ will increase the concentration of ammonia and decrease the concentration of ammonium ion.
c) HI: Adding HI will decrease the concentration of ammonia and increase the concentration of hydroxide ion.
d) NaOH: Adding NaOH will increase the concentration of hydroxide ion and decrease the concentration of ammonium ion.
e) NH₄Cl: Adding NH₄Cl will increase the concentration of ammonium ion and decrease the concentration of ammonia.


To learn more about concentration
https://brainly.com/question/14469428
#SPJ4

What does a negative exponent in scientific notation tell us about the number?.

Answers

A negative exponent in scientific notation tells us that the number is a very small number, closer to zero than one.

A negative exponent means that the number is being divided by a power of ten. For example, 1.2 x 10^-3 means 1.2 divided by 1,000. To explain further, the negative exponent tells us the number of decimal places the decimal point needs to be moved to the left to get the actual value of the number. In other words, the exponent indicates the number of zeros in the denominator of the fraction. The negative exponent signifies that the number is expressed in a smaller unit, which means it is a fraction of the original number. For instance, if we have 0.003 in scientific notation, it means that the number is a fraction of 1,000, which is why we divide by 10 to the power of 3, and move the decimal point three places to the left.


A negative exponent in scientific notation indicates that the number is a small decimal value, less than 1. It tells us that we need to move the decimal point to the left to obtain the actual number. The negative exponent shows how many places to move the decimal point.

To know more about scientific notation, visit:

https://brainly.com/question/16936662

#SPJ11

How does tio2 function in mineral-based suncreens?.

Answers

In mineral-based sunscreens, TiO2 (titanium dioxide) functions as a physical barrier that reflects and scatters harmful ultraviolet (UV) radiation from the sun, protecting the skin from damage.

Titanium dioxide is a naturally occurring mineral that is ground into a fine, white powder.

When applied to the skin, it forms a protective layer on the surface. This layer acts as a shield against the sun's UV rays, specifically UVA and UVB radiation.

It does so by reflecting and scattering the UV light, preventing it from penetrating and harming the skin cells. Unlike chemical sunscreens that absorb and transform the UV rays into heat, mineral sunscreens like TiO2 do not cause any chemical reaction with the skin.
TiO2 plays a crucial role in mineral-based sunscreens by providing a physical barrier against the sun's harmful UV radiation. Its ability to reflect and scatter UV rays makes it an effective and safe option for sun protection.

For more information on mineral based sunscreen kindly visit to

https://brainly.com/question/15436940

#SPJ11

Other Questions
an adolescent experiencing contact dermatitis reports experiencing pruritis. what intervention will the nurse recommend to relieve the itching? How does a shunt used as Circuit Protection work? insertions and deletions of three base pairs: group of answer choices do not disrupt the reading frame so the protein will have an almost normal sequence. usually result in the expression of a truncated protein. cause frameshifts that will change the reading frame and therefore the sequence of the protein. do not disrupt the reading frame so the proteins ends up completely normal. Which of the following members of an organization are security professionals who already have an open dialogue with the Board or CEO on data security?A. RepresentativesB. ReactorsC. ProtectorsD. Influencers In which of the following locations did the independent black church thrive in the early to mid-nineteenth century?a. in the Southb. along the East Coastc. in the Northd. all over the country damon landed his first contract as an entrepreneur then submitted to the local newspaper a news release that gave the impression this was just one of a series of contracts and that business was booming. damon has: If the gross amount is USD 365, what is the net amount after adding 20%? As a student, what roles can you play to control climate change and its effects? Share your ideas in the class. Who is the lead U.S. foreign affairs agency within the Executive Branch and the lead institution for the conduct of American diplomacy? (JP 5-0, Chapter II, II-3) What character exists at the end of all strings in C and C++: what is the sample mean years to maturity for corporate bonds and what is the sample standard deviation? mean (to 4 decimals) standard deviation (to 4 decimals) b. develop a 95% confidence interval for the population mean years to maturity. please round the answer to four decimal places. ( , ) years c. what is the sample mean yield on corporate bonds and what is the sample standard deviation? mean (to 4 decimals) standard deviation (to 4 decimals) d. develop a 95% confidence interval for the population mean yield on corporate bonds. please round the answer to four decimal places. Which of the following statements about diversification is incorrect?A) Mutual funds typically have a diversified portfolio.B) Diversification reduces risk.C) Risk-bearing financial institutions employ diversification.D) Diversification requires that all investments have the same risk/return characteristics. Please help me I need it 3. Acetylene gas, C2H2, is used in welding, produces an extremely hot flame when it burns in pure oxygen according to the following reaction. 2 C2H2(g) + 5O2(g) 4CO2(g) + 2H2O(g) How many moles of water (H2O) are produced when 25.0 grams of C2H2 burns completely? According to Piaget, the developmental processes that explain childrens cognitive development are measured by:a. How children reason, with fundamental changes tin thinking occurring in each stage b. The answers children give to each problemc. How well they work together to solve a problem d. A childs age Suppose that two objects attract each other with a gravitational force of 16 units. If the distance between the two objects is reduced by a factor of 5, then what is the new force of attraction between the two objects? (Circular Motion and Satellite Motion - Lesson 3 - Universal Gravitation: The Apple, the Moon, and the Inverse Square Law) suppose an mnc borrows funds from a bank in order to maintain a business relationship between the two parties. this example most closely resembles which of the following forms of financing? for a client who arrived at the health care facility for an appointment, which nurses action would be benefical during the assessment a board that is 20.0 cm wide, 5.00 cm thick, and 3.00 m long has a density 650 kg/m3. the board is floating partially submerged in water of density 1000 kg/m3. what fraction of the volume of the board is above the surface of the water? 2. when caring for a patient who is receiving heparin, the nurse will monitor a. prothrombin time (pt) b. fibrin degradation products (fdp) c. international normalized ratio (inr) d. activated partial thromboplastin time (aptt)