James need 385.862 g of mabr to have 4.2 moles of nabr for an experiment. The provided options were incorrect.
How to calculate the mass of nabr required for an experiment from the given moles?moles = grams / molar mass
the molar mass of NABR => 92.01 g/mol;
grams = moles x molar mass:
grams = 4.20 moles x 92.01 g/mol = 385.862 g.
What is molecular weight?The term "molecular weight" indicates the mass of a specific chemical molecule. It is determined by integrating the atomic weights of all the atoms in the molecule and is often reported in grammes per mole (g/mol) units. A substance's molecular weight can be used to identify it, comparing its properties to those of other compounds, and estimate the quantities of reagents required for a chemical reaction.
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Answer:
D. 432
Explanation:
NaBr has a molecular weight of 102.894 g/mol
102.894 g/mol x4.2=432.1548 g/mol
the ocean stores carbon from its interactions with the atmosphere, so the ocean serves as (a) for the carbon cycle.(1 point) responses carbon sink carbon sink carbon dioxide carbon dioxide carbon flux carbon flux carbon source
The ocean stores carbon out of its interactions with atmosphere, therefore the ocean serves even though carbon sink for the carbon cycle.
What uses does carbon serve?Metal melting makes use of impurity carbon in the forms of coke derived from coal and charcoal generated from wood. It is crucial for the steel and iron industries in particularly. Graphite is utilized in furnaces liners, electric motor brushes, and pencils. Activated charcoal is employed in filtering and purification processes.
Do people require carbon?Without carbon, life on earth wouldn't be conceivable. This is partly because carbon can easily make bonds to other atoms, allowing biomolecules like RNA and DNA which are crucial for life, to have a variety of shapes and functions.
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The continuity equation indicates that the speed of a fluid flowing through a pipe will change when the cross-sectional area of the pipe changes. Which of the following assumptions justify the use of the continuity equation? Select two answers.
The fluid has uniform pressure everywhere.
The fluid can be modeled as an ideal gas.
The mass flow rate is constant.
The fluid is incompressible.
The use of the continuity equation is justified by the following assumptions:
The mass flow rate is constant.The fluid is incompressible.A continuity equation, also known as a transport equation, is an equation that explains the transfer of a substance. It is especially easy and effective when used to a conserved amount, but it may be extended to apply to any vast quantity. Because mass, energy, momentum, electric charge, as well as other natural quantities remain conserved under their respective proper circumstances, a wide range of physical processes may be explained using continuity equations.
Continuity equations represent a more powerful, localised variant of conservation rules. For example, a weakened form of the law of conservation of energy asserts that energy cannot be generated or destroyed, implying that the total quantity of energy in the cosmos is fixed. This statement does not exclude the possibility of an amount of energy disappearing from one spot while arriving at another.
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a mixture of copper sulfate and water is heated, leaving a residue of copper sulfate in the container. which method was used to separate the mixture?
Evaporation was the process used to separate the copper sulfate and water.
What kind of residue is that, exactly?Anything that remains after a substance has already been removed is called a residue, such as the fat on a frying pan. Additionally, it can simply mean "remainder." Remaining liquid in a bottle, pot, or container after rest has been drained out is referred to as residue.
Chromatography is a separation technique used in labs. The mobile phase or the stationary phase are the two phases of this method.
Mobile phases include both the phase within which the mixture dissolves and the phase that acts as either a carrier through system, such as a sheet or capillary is termed as mobile phase.
The process of evaporation involves using heat to remove dissolved particles from liquid. Heat causes liquid to evaporate, leaving behind the solid. Insoluble particles are removed from the liquid through the process of filtration, which involves permitting it to pass through some kind of porous material like filter paper A method for separating a mixture of liquids having various boiling points is distillation. From this, we might infer that evaporation was the process utilized to separate the salt solution and water mixture.
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The Complete Question :
A mixture of copper sulfate and water is heated, leaving a residue of copper sulfate in the container. Which method was used to separate the mixture?
A. chromatography
B. evaporation
C. filtration
D. distillation
For each of the following IR spectra, identify whether it is consistent with the structure of an alcohol, a carboxylic acid, or neither.• Alcohol • Carboxylic acid • Neither
Identifying the functional group of a molecule from an IR spectrum requires knowledge and experience in interpreting the spectra. However, I can tell you that some general features that can help differentiate alcohols, carboxylic acids, and other functional groups in IR spectra are:
Alcohols:
Typically have a broad and strong absorption in the 3200-3600 cm-1 region, which is due to the stretching vibration of the hydroxyl (-OH) group.
Carboxylic acids:
Carboxylic acids typically have a strong absorption in the 1700-1750 cm-1 region, which is due to the stretching vibration of the carbonyl (-C=O) group.
Carboxylic acids also have an absorption in the ~1200-1300 cm-1 region, which is due to the bending vibration of the carboxyl (-COOH) group
It is important to note that these are general guidelines, and that the exact position and shape of the absorption bands may vary depending on the specific compound and the environment in which it is in.
Additionally, other functional groups may also have similar absorption bands, so it is important to consider other information (such as the chemical structure) when interpreting an IR spectrum.
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An aerosol spray can with a volume of 250 mL contains 2.30 g of propane gas C3H8 as a propellant. If the can is at 25deg C, what is the pressure in the can? What volume would the propane occupy at STP? The can says that exposure to temperatures above 130 deg F may cause the can to burst. What is the pressure in the can at this temperature? (three questions in total)
propane amount. The molar mass of an inert gas is 22.4 E n at standard conditions, or 273.15 K и 1 atom.
What is the LPG gas' volume?The most common cooking propane canister size in India is a 14.2 kg LPG container with a capacity of around 27.8 litres. To account for ullage, an LPG cylinder's contents in litres is deemed full at 80%. Ullage seems to be the empty space in the cap of the LPG cylinder that allows room for the gas vapour to expand. The basic formula measuring volume is length, breadth, and height, as opposed to length, width, and height for the rectangle of a rectangular shape.
How do you determine the STP volume occupied?standard pressure and temperature (STP) At STP, the 8 moles of Hydrogen will have their largest volume. As a result, choice (A), 8 moles of H, is the right one. Note: As a result, standard molar volume is defined as the pressure created by 1 mole of every gas at STP.
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Scientists learn about the properties of some particles from the collisions that occur inside a __________.
Answer:
Scientists learn about the properties of some particles from the collisions that occur inside a particle accelerator.
Explanation:
Answer:
Increases by 10% to £18.15 work out original cost
1). For which structure(s) does the electron-bearing carbon atom have a formal charge of zero?methylene onlyethyl only bothneither
The electron-bearing carbon atom in both methylene (-CH2-) and ethyl (-C2H5) structures has a formal charge of zero.
The formal charge is a method used to predict the electron distribution in atoms of a molecule, which can be calculated by subtracting the number of valence electrons of the free atom from the number of electrons assigned to the atom in the Lewis structure.In the case of methylene, which is a fragment of a hydrocarbon with the chemical formula -CH2- has 2 valence electrons, it shares one electron with each of the two hydrogen atoms, so the carbon atom has a formal charge of zero. In the case of ethyl, which is a fragment of a hydrocarbon with the chemical formula -C2H5, it has 5 valence electrons, it shares one electron with each of the five hydrogen atoms, so the carbon atom has a formal charge of zero.The electron-bearing carbon atoms in both methylene and ethyl have a formal charge of zero because they have a complete octet of valence electrons, which indicates a stable electronic configuration.
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the mass percent of carbon in pure glucose, c6h12o6, is 40.0 percent. a chemist analyzes an impure sample of glucose and determines that the mass percent of carbon is 38.2 percent. which of the following impurities could account for the low mass percent of carbon in the sample? select one: a. ribose, c5h10o5 b. water, h2o c. sucrose, c12h22o11 d. fructose, c6h12o6, an isomer of glucose
The carbon mass percent in pure glucose, c6h12o6, is 40.0 percent. A chemist analyses an impure specimen of carbohydrates and defines that the carbon mass percent is 38.2 percent.. Option B - H20 ,water impurities could account for the low mass percent of carbon .
Impurities refer to unwanted substances present in a sample of a pure substance. They can be present in trace amounts or in larger quantities and can affect the properties or performance of the pure substance. Mass percent, also known as weight percent, is a way to express the concentration of a component in a mixture. It is calculated by dividing the mass of the component of interest by the total mass of the mixture, and then multiplying by 100. The resulting number represents the percentage of the total mass that is made up of the component of interest. For example, in the case of glucose, the mass percent of carbon is 40.0% because 40 grams of carbon are present in every 100 grams of glucose.
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6. Which of the following is not an indication that a chemical reaction has occurred?
(a) formation of liquid droplets above the solution
(b) the solution color changing from clear to yellow
(c) the solution color changing from brown to clear
(d) formation of a silvery metallic foil on the walls of the flask dients
Answer:
Explanation:
Answer: (a) Formation of liquid droplets above the solution is not an indication that a chemical reaction has occurred.
Which one of these elements is likely to form exactly three non-ionic interactions with hydrogen?.
Nitrogen is one of the element that is likely to form three ionic interaction with hydrogen to form ammonia (NH3).
The element that is most likely to interact with hydrogen in exactly three covalent ways is nitrogen. This substance is necessary for life. The importance of nitrogen and hydrogen for life Since nitrogen is significantly more electronegative than hydrogen, their covalent bonds are polar.
Only molecules with covalent bonds between hydrogen and either fluorine, oxygen, or nitrogen experience hydrogen bonding. The majority of the electron density in the covalent bond with hydrogen is removed by these three extremely electronegative elements, leaving the hydrogen atom with a very low electron density.
Because it is a component of DNA and RNA, nitrogen is essential for life.
Another important component of amino acids in proteins is nitrogen.
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The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is a. 13.1 g b. 13.0 g
c. 13.071 g
d. 13 g e. 10 g
The answer to the addition problem is Amphiprotic 13g. able to react as a base and an acid because it can both donate and take a proton.
When does amphoteric differ from amphiprotic?Amphoteric species are capable of acting as an acid and a base. Amphiprotic species may donate and receive protons, making them both a base and an acid in the Brnsted-Lowry equation.
How does something become amphiprotic?A substance is referred to as amphiprotic in chemistry & physical sciences if it has the ability to donate and absorb protons, acting accordingly as either a base or an acid (according to the Brnsted-Lowry theory for acids and bases, acids are proton donors & bases are proton acceptors).
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why can moles of reactantws or products be used rather than their concentrations in the equilibirum constant expression
The equilibrium constants remain unchanged while the concentration changes. The equilibrium constants are unaffected by changes in the concentrations of the substances in the equilibrium. Only a change in temperature may modify an equilibrium constant. The equilibrium point will alter if the amount of one component in the mixture varies.
Le Chatelier's Principle states that the point of equilibrium shifts in a way that tends to reverse the change you have made. Assume that four substances—A, B, C, and D—have reached equilibrium.
A+2B⇌C+D
Le Chatelier's Principle states that if you lower the concentration of C, for instance, the equilibrium position will shift to the right to raise the concentration once more.
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A pure titanium cube has an edge length of 2.81 inches.
how many titanium atoms does it contain? titanium has a density of 4.50g/cm3.
N = ?
A pure titanium cube has an edge length of 2.81 inches. The titanium atoms does it contain with titanium has a density of 4.50g/cm3 is 2.0 × 10²⁵ atoms.
Given that :
The edge length = 2.81 inches = 7.1 cm
V = (7.1)³ = 357.9 cm³
m = V ×d
m = 357.9 × 4.50
m = 1610.55 g
The moles = mass / molar mass
= 1610.55 / 47.87
= 33.6 mol
The titanium atoms = 33.6 × 6.022 × 10²³
= 2.0 × 10²⁵ atoms
Thus, the number of the titanium atoms with edge length of the 2.81 inches is 2.0 × 10²⁵ atoms.
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what is the relationship between the expected products of the reaction below? they are constitutional isomers they are diastereomers only one product is formed they are enantiomers
An epoxide will produce a product in which the epoxide were formed below a double bond and another product in which the ways . one way was formed below the doubled bond at the same time.
An epoxide functional group: what is it?
An epoxide is what? Many chemical compounds include the distinctive functional group known as an epoxide. The group has a 3 ring structure made up of two carbons and oxygen. Epoxides often have a low degree of stability because of the structure of three-membered ring structures.
What does the chemical term "epoxide" mean?
A cyclic ether known as an epoxide has a three-atom ring that closely resembles an equilateral triangle. When comparison to other ethers, these have a high level of reactivity. Two hydrocarbon carbon atoms joined to an oxygen atom make up the basic structure of an epoxide.
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2. a solution has a ph 9.2. a. is this solution acidic, basic, or neutral? b. what is the concentration of the hydronium ion, [h3o ]?
The concentration of the hydronium ion, [H3O+], is low and is equal to 10^-9.2.
What is concentration?Concentration is the ability to focus one's attention on a particular task or thought without being distracted by other things. It is the act of deliberately focusing on one thing at a time and is essential for many tasks such as studying, problem-solving, and decision-making. Concentration requires practice and can be developed by engaging in activities such as mindfulness, breathing exercises, and other relaxation techniques.
a. This solution is basic.
b. The concentration of the hydronium ion, [H3O+], is low and is equal to 10^-9.2. This is because the pH of a solution is equal to -log[H3O+]. Therefore, a pH of 9.2 indicates that the [H3O+] is equal to 10^-9.2.
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If a symbol in a chemical formula does not have a subscript after it, a unit of that compound contains (0 items, 1 atom) of that element.
A unit of that compound comprises one atom of that element if the symbol for that element in the chemical formula does not have a subscript after it.
A chemical formula is a phrase that lists all of the constituent parts of a compound together with their interrelated ratios. There is no need for a subscript if there is just one atom of a certain kind. A subscript is counted to the symbol for an atom if it includes two or more of a certain type of atom.
An element has one atom present when its symbol is authored without a subscript following it. There are two atoms of that element present if the number 2 is depicted. Subscripts are important. When the subscript is changed, the content is also altered.
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What maximum amount of ammonia in grams can be synthesized from 25.2 g
of N2
and 8.42 g
of H2
?
The maximum amount of ammonia in grams can be synthesized from 25.2 g of N230.7 g NH₃.
What ammonia is used for?How is ammonia used? About 80% of the ammonia produced by industry is used in agriculture as fertilizer. Ammonia is also used as a refrigerant gas, for purification of water supplies, and in the manufacture of plastics, explosives, textiles, pesticides, dyes and other chemicals.
What is ammonia smell like?Ammonia (NH3) is a colorless gas that is a compound of nitrogen and hydrogen. It has a strong odor that smells like urine or sweat. Ammonia occurs naturally in water, soil, and the air, and is also found naturally in plants, animals, and the human body.
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true or false? a carbon footprint is made up of the sum of two parts, the primary footprint (measure of direct emissions of co2) and the secondary footprint (measure of the indirect co2 emissions).
A carbon footprint is made up of the sum of two parts, the primary footprint (measure of direct emissions of co2) and the secondary footprint (measure of the indirect CO2 emissions). [TRUE]
About Carbon FootprintsCarbon footprint is the amount of carbon or greenhouse gases produced from various human activities in a certain period of time. The carbon footprint is an important instrument for measuring the contribution of individuals, communities, industries, products and others to climate change. By calculating the carbon footprint, an industry can find out the source of its emissions and can minimize its use from an early age.
Here are some sources that can create a carbon footprint:
Vehicle activityVehicle activity is known to cause a carbon footprint. This is due to the process of burning fuel in vehicles. The more use of fossil fuel vehicles, the more carbon emissions will be released into the air.
FoodProduction processes that occur in the agricultural, livestock and plantation sectors up to consumers are known to contribute 25% of greenhouse gas emissions to the world's total greenhouse gas emissions.
Use of Electrical EnergyThe use of electricity for daily life is also known to be a cause of gas emissions. This is because there are still many power plants that still use fossil fuels. So if you are not wise in using electricity, more gas emissions will be produced.
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cerium (ce) and ytterbium (yb) are both group 3b metals that exhibit other oxidation states in addition to the expected 3 state. write the condensed electron configurations of ce2 , ce3 , and ce4 ..
cerium and europium, the principal formal oxidation state of these elements is trivalent.
What is called element?An element is a fundamental item that can't be easily broken into smaller pieces. In chemistry and physics, an element is a substance that can't be broken down by non-nuclear reactions. In computing and mathematics, an element is a distinct piece of a larger system or set.
What is element and example?Elements are the tiny particles that make up matter. Science describes an element as a pure substance made of only 1 type of atom that can not be broken down further into other substances. For example, hydrogen (H) and oxygen (O) are elements, but water (H2O) H 2 O ) which is made of hydrogen and oxygen is NOT.
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if 250 ml of a 4.5 m stock solution of sulfuric acid is transferred to an empty flask, what volume of water in liters must be added to the flask to reduce the solution's molarity to 2.2 m?
This dilution issue makes use of the equation. MaVa=MbVb. The initial volumes are Va = 15.00 mL and Ma = 6.77M, respectively (concentration).
Describe what diluting is.This act of "adding extra additional solvent to a solution, including such water, to the solution, to decrease the amount of the solute in a solution," is known as dilution. A solution must be diluted by adding more solvent without introducing more solute.
What different types of dilution exist?Serial dilution is a frequent technique for attaining this concentration reduction. In homeopathy, diluting. Using the dilution equation, determine the rate of dilution of a gas. The use of a mark beyond its designated market without authorization is known as trademark dilution.
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the half-life of a reaction of compound a to give compounds d and e is 8.50 min when the initial concentration of a is 0.150 m. how long will it take for the concentration to drop to 0.0300 m if the reaction is (a) first order with respect to a or (b) second order with respect to a?
It will take 20.33 min in the first order for the concentration to drop to 0.0300 M and 11.8 min for the concentration to drop to 0.0300 M in the second order.
What is compound?A substance created by chemically joining two or more different elements. Examples of compounds are table salt (NaCl), which is made from the elements sodium and chloride, and water (H2O), which is created from the elements hydrogen and oxygen.
(a) First order with respect to A:
The half-life of a first-order reaction is constant and does not depend on the initial concentration of the reactant. Therefore, we can use the half-life formula:
t1/2 = 0.693/k, where k is the rate constant of the reaction.
We are given that the half-life of the reaction is 8.50 min when the initial concentration of A is 0.150 M.
Since we know the half-life of the reaction, we can find the rate constant, k = 0.693/8.50 = 0.081 min^-1
To find how long it takes for the concentration of A to drop to 0.0300 M, we can use the formula:
[A]t = [A]0 * e^(-kt)
where [A]t is the concentration of A at time t, [A]0 is the initial concentration of A, k is the rate constant, and t is the time in minutes.
Plugging in the given values and solving for t, we get:
t = (ln (0.0300/0.150)) / (-0.081) = 20.33 min
For (b) Second order with respect to A:
The half-life of a second-order reaction is dependent on the initial concentration of the reactant.
t1/2 = 1/(k[A]) = 8.50 min
By solving for k, we can find k = 1/(8.5*0.15) = 0.0118 min^-1M^-1
To find how long it takes for the concentration of A to drop to 0.0300 M, we can use the formula:
1/[A]t = 1/[A]0 + kt
Plugging in the given values and solving for t, we get:
t = (1/0.0300 - 1/0.150) / 0.0118 = 11.8 min
Therefore, if the reaction is first order with respect to A it will take 20.33 min for the concentration to drop to 0.0300 M, and if the reaction is second order with respect to A it will take 11.8 min for the concentration to drop to 0.0300 M.
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what should we do to reduce the risk when working with concentrated acids and bases ?
a) Never work with it b) Neutralize it c) Dilute them d) Work with large volumes
In order to reduce the risk while working with concentrated acids and bases, they need to be neutralized. Thus, for this question option B: "Neutralize it" is the correct answer.
Concentrated acids are the type of acids that contain a very large amount of acid in comparison to water in the solution. Concentrated acids have high numbers of available ions and a higher mass percentage in the solution. While a concentrated base is an aqueous solution that has a relatively high percentage of the base.
In order to reduce risks while handling concentrated acids and bases, they need to be neutralized with solid sodium bicarbonate.
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When menthyl chloride is treated with a strong base, only one elimination product is observed. yet, when neomenthyl chloride is treated with a strong base, two elimination products are observed.
draw the expected products for the reaction between menthyl chloride and a strong base.
draw the expected products for the reaction between neomenthyl chloride and a strong base.
The reaction between menthyl chloride and a strong base results in a single elimination product, 2-methylpropene, and a chloride ion.
What is reaction?Reaction is the process of responding to an event, action, or stimulus. It can be physical, emotional, mental, or a combination of all three.
Menthyl Chloride + Strong Base -->
Product 1: 2-Methylpropene + Chloride Ion
The reaction between menthyl chloride and a strong base results in a single elimination product, 2-methylpropene, and a chloride ion. This occurs because menthyl chloride has an allylic hydrogen, which can be abstracted by the strong base. This results in the formation of a carbocation intermediate, which then undergoes an E2 elimination reaction to form the desired product, 2-methylpropene.
Neomenthyl Chloride + Strong Base -->
Product 1: 2-Methylpropene + Chloride Ion
Product 2: 3-Methylpropene + Chloride Ion
The reaction between neomenthyl chloride and a strong base results in two elimination products, 2-methylpropene and 3-methylpropene, and a chloride ion. This occurs because neomenthyl chloride has two allylic hydrogens, which can be abstracted by the strong base. This results in the formation of two carbocation intermediates, which then undergo E2 elimination reactions to form the desired products, 2-methylpropene and 3-methylpropene.
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larity if 11 g cacl2 are dissolved in one liter of solution? ... of all ions present in .0200 mole of sodium phosphate in 10.0 ml of solution?
The molarity of 11 g of CaCl2 dissolved in one liter of solution is 0.20 M. The molarity of 0.0200 mole of sodium phosphate in 10.0 ml of solution is 2.00 M.
What is molarity?A measurement of a solution's concentration is its molarity. The concentration of a solution can be determined by measuring the mass of the solute and the volume of the solution. Molarity is a useful measure when trying to understand how much of a solute is present in a given volume of solution. It can be used to compare the strength of different solutions, and also to calculate how much solute is required for a given volume. Molarity is an important concept in chemistry and is used in many areas of science.
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What reagent (or compound) causes the observed visual change in a positive Lucas test? A. Cr(VI) is reduced to Cr(ll) B. The alkyl halide product is insoluble in water C. The product hydrazone is insoluble. D. Ag() is reduced to Ag(0)
The alkyl halide product is insoluble in water causes the observed visual change in a positive Lucas test.
What is Lucas test?The Lucas test uses a solution of anhydrous zinc chloride in concentrated hydrochloric acid to distinguish and classify primary, secondary, and tertiary alcohols. The Lucas reagent is the name given to this mixture in most cases. A positive Lucas test results in the observed visual change because the alkyl halide product is insoluble in water. Put a tiny amount of the sample you need to analyze in a test tube. Add 2 to 3 ml of Lucas reagent to the unknown sample. After thoroughly blending, allow the solution to sit. Note the amount of time spent and note whether there is turbidity (cloudiness) present or not.
Here,
A positive Lucas test results in the observed visual change because the alkyl halide product is insoluble in water.
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3. These two samples of NaCl and CoCl₂ have the same number of moles. Do they
have the same mass? Do they have the same number of particles? Explain.
No, These two samples of NaCl and CoCl₂ will not have the same mass but they do have the same number of particles
What is the relationship between number of particles and moles ?One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant. The concept of the mole can be used to convert between mass and number of particles.
The molecules can be expressed in units of grams, milligrams or even moles. Example,O2,SO42−,CH4 etc. Hence, the difference between moles and molecules is that a mole is a quantity of 6.022×1023 particles, while a molecule contains various atoms of elements bonded chemically.
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after drawing the best lewis structures for so32-, so42-, and so2, place them in order of bond length from shortest to longest?
Bond order, as we know, is inversely related to bond length. Bond length decreases when bond order increases and vice versa. Increasing order of bond length will be SO2<SO42-<SO32-.
Sulphur dioxide has the lowest bond length, whereas sulphite ion does have the longest. Bond order is really the number of electron bonding pairs that exist between two atoms. A single bond has a bond order of one in a covalent bond between two atoms, a double bond does have a bond order of two, a triple bond does have a bond order of three, and on and on. Bond length and bond order are connected; when more electrons engage in bond formation, the bond is shorter. Bond length is often inversely linked to bond strength and bond dissociation energy, thus a stronger bond would be shorter if all other conditions are equal. Half the bond distance between two similar atoms equals the covalent radius.
Bond lengths typically measured inside the solid phase using X-ray diffraction, and in the gas phase using microwave spectroscopy. A bond between a particular pair of atoms might differ amongst molecules. Methane, for example, has different carbon-hydrogen bonds than methyl chloride. However, generalizations are conceivable when the overall structure remains the same.
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consider the reversible reaction: c2o2(g) <------> 2co(g) at equilibrium, the concentration of c2o2 is 1.50 m and that of co is 1.10 m. what is the value of the equilibrium constant, keq?
The value of the equilibrium constant, keq is calculates as 0.807.
What is meant by reversible reaction?Reaction in which the conversion of reactants to products and conversion of products to reactants occur simultaneously is called reversible reaction. One example of reversible reaction is : reaction of hydrogen gas and iodine vapor to form hydrogen iodide.
Reversible reactions reaches an equilibrium point where the concentrations of reactants and products will no longer change. In reversible reaction, both forward and reverse directions of reaction occurs at the same time.
Given, c2o2(g) <------> 2co(g) ; concentration of c2o2 is 1.50 m and
concentration of co is 1.10 m.
As, Keq= K(CO)²/K( C₂O₂)
= 1.1²/1.5
Keq =0.807.
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which of the following is an example of synthesizing information? (required)making connections between the history of housing policies and current housing trends.applying knowledge of basic chemistry from an introductory course towards understanding information in an advanced organic chemistry classing to a conclusion about candidates running for election based on reading multiple viewpoints on their platforms.
An example of synthesizing information is applying knowledge of basic chemistry from an introductory course towards understanding information in an advanced organic chemistry.
What happens when information is combined?When you synthesise knowledge, you take particular ideas and take them into account collectively to comprehend how they compare, contrast, and relate to one another. Students can get information from several sources and put it all together by synthesising it. When these sources are merged, a single, coherent concept is produced. This is the normal method used in class to teach students new concepts, theories, and knowledge.
What is an illustration of information synthesis?Making connections or putting things together is all that is required. We instinctively combine information to assist others in making connections between various concepts. Synthesis occurs, for instance, when you tell a friend what a number of other friends have remarked about a music or movie.
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The police found 70 grams of NaCl (salt) in the room. To kill somebody with acid, you
would need at least 60 grams of HCI (acid). Is there enough salt to prove that Albert
killed the butler with acid?
HCl + NaOH → NaCl + H2O
Clue: Police found 70 grams of NaCl in the room. Convert grams of NaCl (salt) into grams
of HCl (acid) to see if there was enough acid to murder the butler.
70 grams of NaCl (salt) were discovered by the police in the room. There is sufficient salt to demonstrate that Albert used acid to kill the butler.
From the given reaction we have as:
HCl + NaOH → NaCl + H2O
Here by comparing the moles of reactants and products we have 1 mole of HCl reacting with 1 mole of NaOH to give 1 mole of NaCl and H2O.
So, we can say that the mole ratio of NaOH: NaCl: HCl = 1 : 1 : 1
The molecular weight of HCl is 37g
The molecular weight of NaOH is 40g
The molecular weight of NaCl is 59g
In 70g of NaCl there are = 70 / 59 = 1.186 moles of NaCl
If we consider 60g of HCl there are = 60/37 = 1.62 moles of HCl
Here we can see that NaCl acts as limiting reagent and only 1.18 moles of HCl reacts with NaOH.
So, to find the mass of 1.18 moles of HCl = 1.18 x 37 = 43.66g
So, the required amount of HCl to kill the butler is 43.66g. So, there is enough salt to prove that Albert killed the butler with acid.
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