Molar concentration
To calculate the Molar Concentration, we will find the molar concentration by dividing the moles by liters of water used in the solution. For example, the acetic acid here is completely dissolved in 1.25 L of water. Then divide 0.1665 moles by 1.25 L to get the molar concentration, which will be 0.1332 M.
- Molarity [tex]$=w^2 / M^2 x(1000 N)$[/tex]
1. where[tex]$w^2=$[/tex] Weight of solut[tex]e $=2.60 \mathrm{~g}$[/tex]
2.[tex]$M^2=$[/tex] Molecular weight of solute [tex]$=58.5$[/tex]
3. Volume of the solution in ml=40
4. Molarity = ?
- So Molarity (M)=(2.60 / 58.5) x(1000 / 40)
So Molarity (M)= (2.60/58.5) x(1000/40)
Molarity (M) = 1.111 M
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Name each of the following acids and bases.
(Give your answer as a string. For example, enter hydrobromic acid for HBr.)
a) HF
b) Ba(OH)2
c) H2CO3
d) HNO3
e) H2SO3
f) H2SO3
f) HBrO2
The acids are generally named depending on the type of acids that are involved. It could be binary, ternary, oxoacids carboxylic acids, and hydroxyl acids.
a) HF is Hydrofluoric acid which is an example of Binary acid: Acids containing two elements, such as hydrochloric acid (HCl), sulfuric acid (H₂SO₄), and nitric acid (HNO₃).
b) Ba(OH)₂ is Barium hydroxide is a basic compound which is alkaline in nature.
c) H₂CO₃ is Carbonic acid which is an example of Ternary acid: Acids containing three elements, such as phosphoric acid (H₃PO₄) and carbonic acid (H₂CO₃).
d) HNO₃ is Nitric acid which is an example of binary acid.
e) H₂SO₄ is Sulfurous acid which is an example of binary acids
f) HBrO₂ is Bromous acid which is an example of an Oxoacid: Acids containing oxygen, such as nitrous acid (HNO₂) and perchloric acid (HClO₄).
g) CH₃COOH is an Ethanoic acid which is an example of Carboxylic acid: Acids containing the carboxyl functional groups, such as acetic acid (CH₃COOH) and formic acid (HCOOH).
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write the electron configuration for a neutral atom of zinc.; write the electron configuration for a neutral atom of arsenic.; write the electron configuration for a neutral atom of tellurium.; write the electron configuration for a neutral atom of cadmium.; write the electron configuration for a neutral atom of antimony; write the electron configuration for a neutral atom of gallium.; write the electron configuration for a neutral atom of xenon.; write the electron configuration for a neutral atom of indium.
Zinc has the following electronic configuration: 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 10 4 s2.
What element has the formula 1s2 2s2 2p6 3s2 3p6 3d3?Vanadium (V), if you're thinking about a neutral atom, has that specific arrangement of electrons. Since vanadium, a transition metal in the fourth row of group five of the periodic table, has an atomic mass of 23, the atom you're seeking for has an atomic mass of 23.
An element with the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 has how many valence electrons?The quantity of valance electrons, which take part in the construction of an atom's outermost shell.
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points a to g are located on the phase diagram of water. which of the following statements are correct regarding navigation from one point to another across the phase diagram?
The temperature is below 0°C at point E. The temperature rises from point A to point B to point C. You must raise the temperature and pressure in order to travel from point G to point F. You need only lower the pressure to travel from point C to point D. The melting point of water is unusual among molecules in that it drops as pressure rises.
The ice point, commonly known as 0 °C (32 °F; 273 K), is the temperature at which ice melts at 1 atmosphere of pressure. The freezing point of water is not necessarily the same as the melting point when nucleating chemicals are present. This has to do with the fact that solid water is actually less dense than liquid water due to its solid structure. As the pressure rises, the water molecules are pushed closer to one another, shattering the solid lattice and melting ice.The melting point of water is zero degrees Celsius (32 degrees F). Depending on the atmospheric pressure, different amounts of water will boil at different temperatures. When purified water reaches its boiling point at sea level, it does so at 212 degrees Fahrenheit (100 degrees Celsius).
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among the following h atom transitions, which would emit a photon of light with the longest wavelength?
C
An hydrogen atom absorbs energy then the electron moves from lower to higher shell number.
Also if the wavelength is longest then energy difference is minium as wavelength and energy are inversely proportional.
Energy difference is directly proportional to (1/n1^2 - 1/n2^2).
Hence we want this quantity as minium for minimum energy and longest wavelength.
a)(1/1 - 1/4) =0.75
b)(1/16 - 1/36) =0.035
v)(1/36-1/49)=0.00737
D)Not the answer as n=5 to n=4 means energy is released.
e)(1/4-1/9) =0.139
Hence the minimum value is c transition.
Hence the answer is option c.
So an hydrogen atom absorbs energy then the electron moves from lower to higher shell number.
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write the chemical formula for each.
The chemical formula for
Lithium carbonate - Li2CO3, Sodium sulfite - Na2SO3, Mercury(I) Phosphite - Hg6(PO3)2, chromium(ii) dichromate - CrCr2O7, Ammonium carbonate - (NH4)2CO3, calcium dihydrogen phosphate - CaH2PO4, mercury(ii) hypochlorite - HgCl2, Iron(III) sulfide - Fe₂S₃, Copper(I) Permanganate - CuMnO4, Tin(IV) fluoride - SnF₄, Lead(II) iodide - PbI2, Silver oxide - Ag2O.
Define Lithium carbonate - Li2CO3?An inorganic substance, lithium carbonate is the lithium salt of carbonate and has the formula Li 2CO3.In the removal of metal oxides, this white salt is frequently utilized.In order to create lithium carbonate, lithium salts must first be reacted with soda or potash. The salt must then be purified because it is not easily soluble.This drug is used to treat mania and depression (bipolar disorder). By bringing back the proper ratio of some natural chemicals (neurotransmitters) in the brain, it helps to regulate mood and lessen excessive behavior.Having the carbonate ion, a polyatomic ion with the formula CO23, a carbonate is a salt of carbonic acid (H2CO3). A carbonate ester, an organic molecule with a carbonate group, is another possible meaning of the word "carbonate."To learn more about Lithium carbonate - Li2CO3 refer to:
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The fact that the ratio of helium to hydrogen in the Universe is so large (25%:75%) is evidence thatthe whole Universe was once as hot as the interior of a starnuclear fusion rates in stars were much higher in the pastthe expansion of the Universe is acceleratingthe age of the Universe is roughly 14 billion years
The evidence suggests that almost all of the universe's nuclear matter is composed of hydrogen and helium. Hydrogen, the most prevalent element, makes up 74% of the mass, and helium makes up 25%. Less than 1% of the total is made up of heavier elements.
The hot, dense conditions of the universe's creation led to the production of the low-mass elements hydrogen and helium. Nuclear reactions are used to explain a star's conception, development, and demise. These reactions produced the chemical components that make up the matter we can see in the universe.
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C3H9NO + C7H5ClO= ?
Answer:
C3H9NO + C7H5ClO = C10H14NOCl
Explanation:
In this chemical equation, C3H9NO and C7H5ClO are the reactants, and C10H14NOCl is the product. The reactants are combined through a chemical reaction to form the product. The coefficients in front of each chemical formula indicate the number of molecules of each substance that are involved in the reaction.
To balance the equation, we need to make sure that the number of atoms of each element on the reactant side of the equation is equal to the number of atoms of each element on the product side of the equation. In this case, we can see that the reactant side of the equation has 3 carbon atoms, 9 hydrogen atoms, 1 nitrogen atom, and 1 oxygen atom. The product side of the equation has 10 carbon atoms, 14 hydrogen atoms, 1 nitrogen atom, 1 chlorine atom, and 1 oxygen atom.
To balance the equation, we need to add coefficients in front of each chemical formula to make sure that the number of atoms of each element is the same on both sides of the equation. For example, we can add a coefficient of 3 in front of C7H5ClO to balance the number of carbon atoms on both sides of the equation. This gives us the balanced equation:
C3H9NO + 3C7H5ClO = 3C10H14NOCl
In this balanced equation, the number of atoms of each element is the same on both sides of the equation, and the reaction can proceed without violating the law of conservation of mass.
What convert nitrogen to a form that can be used by plants?; How can nitrogen in the soil be converted?
Nitrogen gas (N2) diffuses into the soil from the atmosphere, and species of bacteria convert this nitrogen to ammonium ions (NH4+), which can be used by plants.
What is soil?
Soil, also commonly referred to as soil or soil, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Some scientific definitions distinguish soil from soil, especially by restricting the former term to displaced soil.
Therefore, Nitrogen gas (N2) diffuses into the soil from the atmosphere, and species of bacteria convert this nitrogen to ammonium ions (NH4+), which can be used by plants. Soil, also commonly referred to as soil or soil, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.
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Under which of the following conditions of temperature and pressure will H2 gas be expected to behave most like an ideal gas? (1 Point) 50 K and 0.10 atm 50 K and 5.0 atm 500 K and 0.10 atm 500 K and 50 atm
Answer: 500K and 0.10atm
Explanation:
An important concept to remember is that gases behave most ideally under low pressure and high temperature. 500 K is a high temperature and 0.10 atm is a low pressure, which makes that the best answer.
consider the substitution reaction of (r)-3-chloro-3-methylhexane with methanol and heat. r 3 chloro 3 methyl hexane is treated with methanol to give four possible products. all have substituents on carbon 3. the structure of the starting material is a 6 carbon chain with a methyl group pointing towards the viewer and a chloro group pointing away from the viewer. compound a has a methoxy group pointing towards the viewer and a methyl group pointing away from the viewer. compound b has a methyl group pointing towards the viewer and a hydroxy group pointing away from the viewer. compound c has a hydroxy group pointing towards the viewer and a methyl group pointing away from the viewer. compound d has a methyl group pointing towards the viewer and a methoxy group pointing away from the viewer. identify the substitution product(s). a b c d no reaction
The possible products of the Substitution reaction of (r)-3-chloro-3-methylhexane with methanol and heat are A and D.
The substitution reaction of (r)-3-chloro-3-methylhexane with methanol and heat is a nucleophilic substitution reaction. In this reaction, the chlorine atom in (r)-3-chloro-3-methylhexane acts as the leaving group, while the methanol serves as the nucleophile. The reaction proceeds through a series of steps:
1. The chlorine atom in (r)-3-chloro-3-methylhexane is protonated by the hydrogen atom in methanol. This creates a positively charged carbon-chlorine bond.
2. The nucleophilic attack of the methanol molecule onto the positively charged carbon-chlorine bond results in the formation of a covalent bond between the two molecules.
3. The newly formed covalent bond is then broken by the removal of the chlorine atom from the molecule, leaving behind a positively charged methoxy group.
4. The positively charged methoxy group is then protonated by the hydrogen atom in methanol, resulting in the formation of a new covalent bond between the two molecules.
5. Heat is then applied to the reaction mixture, which increases the reaction rate and facilitates the formation of the desired product, (r)-3-methyl hexane-2-methanol.
This substitution reaction is an example of a nucleophilic substitution reaction, which is a type of chemical reaction in which a nucleophile (a molecule with an electron-rich center) replaces a leaving group (a molecule with an electron-poor center) from a substrate molecule.
Hence A and D are the products of the reaction. The image attached below explains Clearly the reaction.
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Predict the major products of the following reactions, and give the structures of any intermediates. Include stereochemistry where appropriate.
The study of a molecule's three-dimensional structure is known as stereochemistry. The sole structural difference between the cis and trans isomers, which are types of stereoisomers, is where the atoms of the molecule are situated in three dimensions.
What is the stereochemistry principle?Stereochemistry is a branch of chemistry that studies and manipulates the relative spatial arrangement of atoms within molecules.
What role does stereochemistry play?Because a drug's shape affects how it interacts with the different biological molecules (enzymes, receptors, etc.) that it comes into contact with in the body, stereochemistry is crucial to understanding how drugs work.
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Using Henderson-Hasselbalch equation, calculate the volume of 0.20 M Acetic Acid and 0.2 M Sodium Acetate needed to prepare 50 mL of 0.1 M Acetate Buffer solution (pH = 4.5). pKa of Acetic Acid is 4.74?
Volume of 0.20 M sodium acetate is calculated to be 0.82g. Sodium acetate can be used as additives in food, industry and in buffer solutions.
What is Henderson-Hasselbalch equation?To determine pH of a buffer is by using the Henderson–Hasselbalch equation is pH = pKₐ + log([A⁻]/[HA]).
As we know that, pH = pKa + log [salt]/[acid]
Given pH (4.75) and pKa (4.75).
Given [acid] = 0.20 M
When the pH = pKa, ratio of [salt]/[acid] =1 because log 1 = 0
Hence,[sodium acetate] = 0.20 M.
4.75 = 4.75 + log [sodium acetate]/[0.20]
0 = log x/0.2
Hence, x = 0.2 M
To calculate the "amount" in grams, convert 0.20 M to grams using the volume of 50 ml (0.05 L)
0.20 mole/L x 0.05 L = 0.01 moles moles sodium acetate
0.01 moles sodium acetate x 82 g/mole
Volume of 0.20 M sodium acetate= 0.82g
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what occurs at stage a?; what occurs at stage a water cools and turns to liquid; in the water cycle, clouds form as a result of; during which process of the water cycle does water change from a gas to a liquid?; what occurs at stage a brainly; condensation; how can water vapor in the air return to earth; what is precipitation
At stage a water cools and turns to liquid is called as condensation. in the water cycle, clouds form as a result of condensation . during which process of the water cycle does water change from a gas to a liquid is condensation.
The stage a water cools and turns to liquid; in the water cycle is the condensation . in the water cycle, clouds form as a result of the condensation. the cloud formation is the stage of the condensation. in condensation the water vapor changes to the gas to liquid. condensation is during which process of the water cycle does water change from a gas to a liquid.
The precipitation is the stage at which the when the enough droplets are merge and it falls out the cloud to the ground below called as precipitation.
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Select all statements that correctly describe the relationship between the parameters investigated in the Boyle's law experiment shown in the visual.The variable parameters are volume and temperature.As pressure increases from (a) to (b) to (c), the volume of the gas decreases.The variable parameters are pressure and volume.The number of moles of gas remains constant.The temperature increases from (a) to (b) to (c).
Following statements that correctly describe the relationship between the parameters investigated in the Boyle's law experiment ;
-As pressure increases from (a) to (b) to (c), the volume of the gas decreases.
-The variable parameters are pressure and volume.
-The number of moles of gas remains constant.
Boyle’s Law :- Boyle's Law states that when the temperature of a given mass of confined gas is constant, the product of its pressure and volume is also constant (p * V = constant). When comparing the same substance under two different sets of conditions, the law can be expressed as: P1V1 = P2V2, showing that as volume increases, the pressure of a gas decreases proportionally, and vice versa.
Boyle's Law is named after Robert Boyle, who published the original law in 1662.
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Using the following equation and your results from the previous
question, calculate the enthalpy of combustion of 1 mole of
ethanol (show your workings and the correct units).
Q = m c T
Where:
Q = energy released (J)
m = mass of water (g)
C = specific heat capacity of water (4.18 J K-1 g
-1
)T = change in temperature (oC)
Results from previous : c) mass of ethanol burned = 70.3 g - 62.5 g
mass of ethanol burned = 7.8 g
molar mass of ethanol = 46.07 g/mol
moles of ethanol = 7.8 g * 1 mol/(46.07 g)
moles of ethanol = 0.169 moles
The moles of ethanol burned were 0.169 moles.
The enthalpy of combustion of a substance is the heat released when a given amount of the substance burns. To calculate the enthalpy of combustion of 1 mole of ethanol, we can use the following equation:
ΔHcomb = [-ΔHf(products) + ΔHf(reactants)]
Where ΔHf is the standard molar heat of formation, and the values have to be looked up in a thermochemistry table.
ΔHcomb = [-ΔHf(CO2(g)) - ΔHf(H2O(l)) + ΔHf(C2H5OH(l))]
ΔHcomb = [-(-393.5) - (-285.83) + (-235.53)] = -865.36 kJ/mol
So the enthalpy of combustion of 1 mole of ethanol is -865.36 kJ/mol.
Note that the enthalpy of combustion is an exothermic process, as the enthalpy is negative, which means that heat is released during the combustion of ethanol.
What is enthalpy of combustion?Enthalpy of combustion is a measure of the heat released during a chemical reaction in which a substance, typically a fuel, is burned in the presence of oxygen. It is defined as the change in enthalpy that occurs when a substance is completely burned in a steady-state process, typically at constant pressure. It is represented by the symbol ΔHc and is measured in units of energy per mole of substance, such as joules per mole (J/mol) or kilojoules per mole (kJ/mol).
The enthalpy of combustion is a measure of the energy content of a fuel and is an important property in thermochemistry. It is used to determine the energy efficiency of fuels and combustion processes and to compare the energy content of different fuels. In general, fuels with higher enthalpies of combustion release more energy when burned and are more efficient.
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Which one of the following would form a precipitate when mixed with LiOH?
A) KNO3
B) NH4Cl
C) Ca(C2H3O2)2
D) ZnBr2
ZnBr2 is the only compound that will precipitate when combined with LiOH.
What is a precipitation reaction ?When dissolved substances react, one (or more) solid products are produced, which is known as a precipitation reaction. These kinds of reactions, which are also occasionally known as double displacement, double replacement, or metathesis reactions, frequently involve the exchange of ions between ionic compounds in aqueous solutions.The chemical reaction between potassium chloride and silver nitrate, in which solid silver chloride is precipitated out, is one of the greatest examples of precipitation reactions. This is the precipitation reaction's byproduct, the insoluble salt.The balanced molecular chemical equation for the precipitation reaction between aqueous solutions of sodium chloride and silver nitrate is: NaCl(aq) + AgNO3(aq) NaNO3(aq) + AgCl (s)In this case,
a reaction between LiOH and ZnBr2 would be as follows;
2LiOH + ZnBr2 ----------> 2LiBr + Zn(OH)2 (s)
Zn(OH)2 is an insoluble salt and will precipitate out in the solution.
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a farmer tested soil in his farm and found out that its ph was 5.5.this was below the recommended ph of 7.0.suggest how the farmer could achieve the recommended ph of the soil in his farm
To achieve the recommended ph of the soil in his soil, the farmer should use quick lime or slaked lime, or calcium carbonate.
In general, the plants will grow best in neutral soil pH. When the soil pH property is acidic, it can decrease the availability of essential nutrients and decrease plant production. Limestone is the most common way to increase the pH of soil.
The other way to increase the pH value of soil is, by mixing the soil using a lime-based compound like dolomite lime or agricultural lime. The finer the particles of limestone, the more rapidly it becomes effective.
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Due to the extensive regulatory systems in the cell, tRNAs are rarely found attached to incorrect amino acids. True/False
False. Due to the extensive regulatory systems in the cell, tRNAs are rarely found attached to incorrect amino acids.
Transfer RNA (tRNA) is a molecule synthesized from the process of transcribing DNA into segments located in specific regions of chromosomes. It is involved with protein synthesis in the mechanism of gene translation. This molecule is responsible for driving amino acids to form the polypeptide chains that make up proteins.
While it is true that a cell has extensive regulatory systems to prevent the attachment of an incorrect amino acid to a tRNA, it is not true that the attachment of an incorrect amino acid is impossible, although rare, can happen.
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type the correct answer in the box. what is the mass of one mole of phosphorous (p) atoms? express your answer to four significant figures. the mass of 1 mole of phosphorus atoms is ___ grams.
The mass of 1 mole of phosphorus atoms is calculated to be 30 grams.
Mass number of an atom is defined as the sum of total number of protons and neutrons present in an atom. The mass number of any element is calculated by the formula:
Mass Number (A) = Number of Protons + Number of Neutrons
On the other hand, atomic number is defined as the total number of protons present in an atom.
Therefore, it is calculated experimentally that mass number of phosphorous is 30 g/mol whereas atomic number of phosphorous is 15.
Therefore, the mass of 1 mole of phosphorus atoms is 30 grams.
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What volume of 0.35 M Ca(NO3)2 is
required to completely react with 50.0 mL
of 0.75 M K2SO4?
Ca(NO3)2 + K₂SO4 → CaSO4 + 2KNO3
[?] mL Ca(NO3)2
Answer: 107 mL
Explanation:
This equation can be modeled as MV=MV. Where M is molarity and V is volume.
The ratio between the two values is 1 mol to 1 mol so we do not have to deal will manipulating mol amounts and can just plug in values.
(0.35)V=(0.75)(50)
V=107 mL
Answer: 107 ml
Explanation:
1. How did the enzyme amylase affect the digestion of the cracker in Part 1? How do these results correlate with where this enzyme occurs in the human body? B U T 0 Word(s) T
The pH of the solution or enzyme amylase affect is directly affected by fat digestion. Set has a neutral PH, but when fats are digested by lipase, they are converted into fatty acids. The presence of fatty acids can either decrease or stimulate the pH, resulting in an increase in the acidity of the solution. PATHWAY - Fat Digestion - Produre, - Fatty Acid Alkali Sodium Carbonate Increasing the pH
The enzyme alpha-amylase is in charge of digesting or breaking down starch. Crackers are a type of food that contains a lot of starch. When the salivary glands release starch, alpha-amylase begins digesting it in the mouth. It degrades starch into smaller chains of two or three glucose molecules.Proteins are enzymes that aid inside the speeding up of digestion, or the synthetic reactions that take place in our carcasses. Some substances are formed whereas others are broken. Enzymes are present in all living items. Enzymes are produced naturally by in out bodies. However, enzymes may also be found in factory - made products and food. Pepsin, for example, is an integral part of gastric secretions that aids in the breakdown of bits of food in the stomach. Similarly, the pancreatic amylase, which is found in saliva, gets converted starch into carbohydrates, which aids in digestion. The enzyme thrombin is used in medicine to promote wound healing.
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How many grams in 8.25 moles of CH4
Answer:
[tex] \huge{ \boxed{132 \: g}}[/tex]
Explanation:
To find the mass of the molecule given it's number of moles, we first find the molar mass of [tex] CH_4 [/tex] after that we use the formula;
mass(g) = Molar mass (g/mol) × moles
Molar mass of [tex] {CH_4} [/tex] = 12 +4(1) = 12+4 = 16 g/mol
number of moles = 8.25 mol
mass = 16 × 8.25 = 132
We have the final answer as
132 g
in the dilution equation, units can vary when expressing which of the following (so long as the same units are used on both sides of the equation)?amount of solute density volume none of the above
In the dilution equation, the units can vary when expressing the volume of the solute and the solvent, as long as the same units are used on both sides of the equation. The correct answer is option c.
The dilution equation is used to calculate the concentration of a solution that has been diluted by adding more solvent. The equation is:
[tex]\rm C_1V_1 = C_2V_2[/tex]
Where, [tex]\rm C_1[/tex] is the initial concentration, [tex]\rm V_1[/tex] is the initial volume, [tex]\rm C_2[/tex] is the final concentration, and [tex]\rm V_2[/tex] is the final volume.
When using this equation, it is important that the units of volume are the same on both sides of the equation.
Therefore, when expressing the volume of the solute and the solvent, the units can differ as long as the same units are used on both sides of the equation. Option c is the right choice.
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Your question is incomplete but most probably your full question was:
In the dilution equation, units can vary when expressing which of the following (so long as the same units are used on both sides of the equation)?
a. amount of solute
b. density
c. volume
d. none of the above
complete the mechanism for the electrophilic addition when the alkene is treated with water in acid. a) Use curved arrows to show the attack on the electrophilic hydrogen by the alkene. b) Complete the structure of the carbocation intermediate by adding the missing positive charge.
Alkenes experience electrophilic addition reactions. Cross-bond addition of electrophiles occurs. Because the double bond has a higher electron density and acts as a neucleophile in the given reaction, the H+ is across
What is extremely reactive and what's an example?Since they have a low level of electrons, electrophiles can accept a pair of electrons from species that have a high level of electrons. Carbocations and compounds with carbonyls are two examples. An electron-rich species known as a nucleophile gives electron pairs to other species that lack electrons. Examples include cyanide ions, carbanions, water, ammonia, and more.
Why is a given atom electrophilic?An electrophile is a reagent that accepts two electrons to create a new covalent bond. Let's now discuss electrophilicity, often known as "electron-loving" or "loving negative charge." In order to create a new covalent bond, an electrophile species must receive two electrons.
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what is the term used to describe something that slows or stops a chemical reaction; is burning a log endothermic or exothermic; is mixing a powder into peroxide to make it get hot, steam, & boil. endothermic or exothermic; all chemical changes result in; what does exothermic mean; is combustion exothermic
In an exothermic reaction, more energy is released than is used to break the bond of the reactants forming a bond in the product.
An exothermic reaction involves an increase in the temperature of the reaction mixture. A chemical reaction that absorbs total energy is called an endotherm. A reaction inhibitor is a substance that slows down or prevents a chemical reaction.
Exothermic processes release heat and raise the temperature of adjacent areas. Endothermic processes absorb heat and cool the surroundings. Substances that slow or stop a chemical reaction are called inhibitors. Endothermic reactions are chemical reactions in which reactants absorb thermal energy from the environment to form products.
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In astronomical units, about how much farther is Saturn from the Sun than Jupiter is
Answer:
The average distance from Saturn to Jupiter is 402 million miles. The average distance from Saturn to Jupiter is 402 million miles or 4.32 AUs
TRUE/FALSE. when methylenecyclopentane is treated with in dichloromethane, the major product is 1-(bromomethyl)cyclopentene .
TRUE, 1-(bromomethyl)cyclopentene is the main byproduct of the treatment of methylenecyclopentane with dichloromethane.
How dangerous is dichloromethane?Even though dichloromethane is really the least hazardous C1 chlorohydrocarbon, it nevertheless poses risks. Its inhalation can result in symptoms like fatigue, inflammation of the respiratory tract, and even death. It also might be carcinogenic, but insufficient research has been done to determine the level of exposure likely causes cancer.
What is the chemical symbol for dichloromethane?Dichloromethane, another name for methylene chloride, is an odorless, flammable liquid with a volatile nature similar to chloroform. Paint stripping, the production of pharmaceuticals, the production of paint removers, and the cleaning and degreasing of metal are just a few of the businesses that employ methylene chloride in diverse industrial processes.
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Suppose the material you are recrystallizing fails to precipitate from solution. What can
you do to recover the material from solution?
Re-crystallizing material does not precipitate from solution bring the substance back from the solution Break glass using an ice bath.
Describe the recrystallization process.Chemicals are purified through the physical process of recrystallization in accordance with their varying solubilities. The procedure is finished by heating the substance to dissolve the impurity-containing chemical in a mixture of a solvent system.
What is the process of recrystallizationThe solute, which needs to be purified, is dissolved in a suitable hot solvent prior to recrystallization. As the liquid cools, the solute reaches saturation in the solution and crystallizes, producing a solid.
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a tank at is filled with of sulfur tetrafluoride gas and of dinitrogen difluoride gas. you can assume both gases behave as ideal gases under these conditions.
Mole fraction of N2O is 0.330 and mole fraction of SF4 is 0.669; pressure N2O is 39127.053 Pa ; pressure of SF4 is 792126.36 and total pressure is 118253.413 Pa
What is pressure in chemistry?If volume and temperature are held constant, ideal gas equation can be rearranged to show that pressure of a sample of gas is directly proportional to number of moles.
Given, volume of tank is 8 L
Weight of dinitrogen difluoride gas is 5.53 g
weight of Sulphur hexafluoride gas is 17.3 g
Amount of N2O= 5.53/ (14 * 2 + 16)
= 0.1256 mol
amount of SF4 = 17.3 /( 32.1 + 19 *4 )
= 0.254 mol
mole fraction of N2O= 0.1256/( 0.1256 + 0.254)
= 0.330
amount of SF4= 0.254/( 0.1256 + 0.254)
= 0.669
PV = n RT
P of N2O = 0.1256* 8.31 ( 273 + 26.9)/0.008
= 39127.053 Pa
mole of SF4 = 0.254* 8.31 ( 273 + 26.9)/0.008
= 79126.36 Pa
Therefore, total pressure = 39127.053 + 79126.36 = 118253.413 Pa
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Note : The question given on the portal is incomplete. Here is the complete question.
Question : A 8.00 L tank at 26.9 C is filled with 5.53 g of dinitrogen difluoride gas and 17.3 g of sulfur hexafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank.
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy AG for the following redox reaction.
Round your answer to 3 significant digits.
6Br (aq) + 2Cro (aq) +8H₂0 (1) 3Br₂ (1)+2Cr(OH), (s) + 100H (aq)
1
According to the equation G° = -nFE°, the standard change in free energy, G°, and the standard potential, E°, for a redox reaction are connected.
How is the standard cell potential determined from the standard reduction potentials?Due of its higher standard reduction potential, the silver half-cell will go through reduction. Oxidation will take place in the tin half-cell. E0cell=E0red+E0oxid can be used to compute the total cell potential.
What does the normal free energy change of G mean?The amount of energy released during a chemical reaction's conversion of reactants into products under standard circumstances is known as the standard free energy change (or "Go").
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