Which salts will be more soluble in an acidic solution than in pure water?
Be(OH)2
CuCN
PbBr₂
CaSO4
KCIO4

Answer:

100008

Explanation:

The v/v concentration of 160ml pure acetic acid in 650ml solution is 24.61 %.

There is 160ml of pure acetic acid in the 650 ml solution of acetic acid.

The volume/volume concentration of acetic acid can be calculated as:

Volume/Volume = \(\rm \frac{volume\;of\;acetic\;acid}{Volume\;of\;solution}\;\times\;100\)

v/v = \(\rm \frac{160}{650}\;\times\;100\)

v/v = 0.2461 \(\rm \times\) 100

v/v = 24.61 %

The concentration of pure acetic acid in the 650 ml solution is 24.61 % (v/v).

For more information about v/v concentration, refer the link:

https://brainly.com/question/23849414?referrer=searchResults

Answer:

There are 1.4754246675000002e+24 atoms of Hydrogen within the measurement of 2.45 moles of hydrogen!

Explanation:

Answer:

i think it is letter b. rustability but not so sureeee

During exercise when oxygen supply is low, pyruvate produced from glucose breaks down into lactate. High lactate levels lead to muscle cell acidity as lactate hydrolyzes to lactic acid.

During exercise, muscle cells require energy to carry out physical activity. However, when the demand for energy is high, there may be insufficient oxygen supply to support energy production, a condition known as hypoxia. In such situations, the pyruvate that is produced from the breakdown of glucose is converted into lactate as a means of producing energy in the absence of oxygen. This process is called anaerobic metabolism.

As the body continues to work out, lactate accumulates in the muscle cells leading to acidity as some of the lactate hydrolyzes to form lactic acid. High lactate levels can lead to muscle fatigue, soreness, and impaired muscle function. The production of lactate is essential for muscle contraction during high-intensity exercise. However, when the rate of lactate production is greater than its removal, the concentration of lactate in the blood increases leading to the onset of fatigue and exhaustion.

Learn more about hypoxia here:

https://brainly.com/question/30820543

#SPJ11

Answer:

1.583 moles

Explanation:

Rounded Atomic Mass of Au = 197 grams

\(\frac{312}{197} =1.5837, 1.584\)

Answer:

Mechanical waves are waves that require a medium. This means that they have to have some sort of matter to travel through. These waves travel when molecules in the medium collide with each other passing on energy.

The molarity of a 3.555 M solution of procaine hydrochloride, which has a density of 1.102 g/ml, is 0.003555 M.

Given information:

Procaine hydrochloride (mw = 272.77 g/mol) is used as a local anesthetic.

The density of a 3.555 M solution is 1.102 g/mL.

To find the molarity of a 3.555 M solution, we need to use the below formula:

Molarity (M) = Number of moles of solute / Volume of solution in Liters1.

Calculate the number of moles of solute

The molecular weight of procaine hydrochloride (C13H20N2O2.HCl) is 272.77 g/mol.3.555 M solution means 3.555 moles of solute present in 1 liter of solution.

Number of moles = Molarity × Volume of solution in Liters

Number of moles = 3.555 × 1 L

Number of moles = 3.5552.

Calculate the volume of the solution in milliliters

1 L of solution will have a mass of 1102 grams because the density of the solution is 1.102 g/mL.

Volume of the solution = mass of solution / density of the solution

Volume of the solution = 1102 g / 1.102 g/mLVolume of the solution = 1000 mL

Finally, substituting the values in the molarity formula:

Molarity (M) = Number of moles of solute / Volume of solution in Liters

Molarity (M) = 3.555 moles / 1000 mL (1 L = 1000 mL)Molarity (M) = 0.003555 M

Therefore, the molarity of a 3.555 M solution of procaine hydrochloride, which has a density of 1.102 g/ml, is 0.003555 M.

Learn more about molarity here:

https://brainly.com/question/31545539

#SPJ11

The number of molecules of HCl formed when 50.0 g of water reacts according to the following balanced reaction is 2.78 x \(10^{24}\).

In the given balanced reaction, 2 moles of \(ICl_3\) react with 3 moles of \(H_2O\) to form 1 mole of ICl and 1 mole of \(HIO_3\), and 5 moles of HCl. To determine how many moles of HCl will be formed when 50.0 g of water reacts, we first need to find the number of moles of water in 50.0 g: 50.0 g \(H_2O\) / 18.015 g/mol \(H_2O\) = 2.776 mol H2O

Since 2 moles of ICl3 react with 3 moles of \(H_2O\) to form 5 moles of HCl, we can use stoichiometry to find the number of moles of HCl formed: 2.776 mol H2O x (5 mol HCl / 3 mol \(H_2O\) ) = 4.627 mol HCl. Therefore, 4.627 moles of HCl will be formed when 50.0 g of water reacts. To find the number of molecules, we can use Avogadro's number: 4.627 mol HCl x 6.022 x \(10^{23}\) molecules/mol = 2.78 x \(10^{24}\) molecules HCl

Learn more about the balanced reaction at

https://brainly.com/question/28990748

#SPJ4

Ionic bonds are a type of bond formed with the attraction between oppositely charged ions to form a chemical compound, this type of bond will have a transfer of electrons, from the positively charged ion (cation) to the negatively charged ion (anion). Since this type of bonding heavily depend on the electronegativity of the elements, we will have compounds formed with metals, located more to the left in the periodic table, mostly group 1 and 2, and with nonmetals, more to the right in the periodic table, one example of this type of bond is Chlorine (nonmetal anion) and Lithium (metal cation).

Covalent bonds are a type of bond formed with the sharing of electrons between two elements with no big difference in their electronegativity, usually, we will see nonmetals in this type of bond, since their difference in electronegativity is not as relevant as the difference between metals and nonmetals, one example of this type of chemical bond is Nitrogen and Oxygen, 2 nonmetals that can bond together.

Metallic bond, as the name suggest, is a type of bond that will strictly involve metals and not nonmetals, this type of bond has many properties but the low electronegativity in general is one of these properties, one example for this bond is Gold and Gold

Therefore the answers are:

Gold and Gold = metallic

Nitrogen and Oxygen = covalent

Chlorine and Lithium = ionic

Answer:

D- Traits higher on the tree developed before traits lower on the tree.

Explanation:

The answer is D because the higher/stronger a trait is it will be developed before any lower traits.

The fugacity in atm for pure ethane at 310 K and 20.4 atm is given by the equation: f = 20.4 exp (-Δg1/RT). The change in chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm is -0.0911RT.

Fugacity is a measure of the escaping tendency of a component in a mixture, which is defined as the pressure that the component would have if it obeyed ideal gas laws. It is used as a correction factor in the calculation of equilibrium constants and thermodynamic properties such as chemical potential. Here we need to determine the fugacity in atm for pure ethane at 310 K and 20.4 atm and the change in the chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm. So, using the formula of fugacity: f = P.exp(Δu/RT) Where P is the pressure of the system, R is the gas constant, T is the temperature of the system, Δu is the change in chemical potential of the system.  Δu = RT ln (f / P)The chemical potential at the initial state can be calculated using the ideal gas equation as: PV = nRT    

=>  P

= nRT/V

=> 20.4 atm

= nRT/V

=> n/V

= 20.4/RT The chemical potential of the system at the initial state is:

Δu1 = RT ln (f/P)

= RT ln (f/20.4) Also, we know that for a pure substance,

Δu = Δg. So,

Δg1 = Δu1 The change in pressure is 24 atm – 20.4 atm

= 3.6 atm At the second state, the pressure is 24 atm.

Using the ideal gas equation, n/V = 24/RT The chemical potential of the system at the second state is: Δu2 = RT ln (f/24) = RT ln (f/24) The change in chemical potential is Δu2 – Δu1 The change in chemical potential is

Δu2 – Δu1 = RT ln (f/24) – RT ln (f/20.4)

= RT ln [(f/24)/(f/20.4)]

= RT ln (20.4/24)

= - 0.0911 RT Therefore, the fugacity in atm for pure ethane at 310 K and 20.4 atm is:

f = P.exp(Δu/RT)

=> f

= 20.4 exp (-Δu1/RT)

=> f

= 20.4 exp (-Δg1/RT) And, the change in the chemical potential between this state and a second state of ethane where the temperature is constant but pressure is 24 atm is -0.0911RT. Therefore, the fugacity in atm for pure ethane at 310 K and 20.4 atm is given by the equation: f = 20.4 exp (-Δg1/RT). The change in chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm is -0.0911RT.

To know more about chemical potential visit:-

https://brainly.com/question/31100203

#SPJ11

Answer:

B

Explanation:

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.

Malleability, Solubility, and Density are all characteristics that can be observed without changing the identity of the substance. Combustibility, on the other hand, refers to the tendency of a substance to burn as a result of fire or chemical reaction. This means it is a chemical property, because it describes the ability for a substance to undergo a specific chemical change.

S (s) + O₂ (g) → SO₂ (aq) represents this chemical reaction

In stating a chemical equation it can be done in the form of a word or a chemical formula

A word equation will include the words of the reactants, products, form of the compound (liquid, gas, solid), the total concentration/quantity of the reactants and products which can be expressed in mass, moles, or volume

The questions statement above shows that sulfur powder (S) and oxygen gas (O₂) are reactants (located on the left of the reaction equation), and sulfur dioxide (SO₂) is the product of the reaction (stated in the problem there is the word "to form") which is located on the right

So the complete reaction

S (s) + O₂ (g) → SO₂ (aq)

Answer:

The correct answer is A

Explanation:

Answer:

CLIMB A MOUTAIN

Explanation:

B

In the mountaintop removal process, the entire mountaintop is removed to extract coal i.e., option (b) is the correct answer.

Mountaintop removal is a mining technique primarily used to extract coal from mountaintops.

It involves removing the top layers of soil, vegetation, and rock to expose the coal seams underneath.

This process is typically carried out using heavy machinery, including excavators and bulldozers, to clear the area and access the coal deposits.

While other fossil fuels such as oil and natural gas are extracted from underground reserves, mountaintop removal specifically targets coal deposits.

The process is prevalent in coal-rich regions, particularly in the United States, where it has been a subject of environmental concern due to its significant ecological impacts, including deforestation, habitat destruction, water pollution, and disruption of ecosystems.

Therefore, the correct answer is option (b), coal.

Mountaintop removal is specifically associated with the extraction of coal, while oil and natural gas are extracted using different methods such as drilling and hydraulic fracturing in different geological formations.

Learn more about mining techniques here:

https://brainly.com/question/30754271

#SPJ11

The number of molecules of water in a collection of snowflakes with a mass of 0.005 grams is approximately 1.67 x 10^20 molecules.

To determine the number of molecules of water in a collection of snowflakes with a mass of 0.005 grams, we need to use the concept of moles and Avogadro's number.

We know the molar mass of water is approximately 18.015 grams/mol.

Mass (g) = Number of moles × Molar mass (g/mol)

0.005 g = Number of moles × 18.015 g/mol

Number of moles = 0.005 g / 18.015 g/mol ≈ 0.000277 mol

Avogadro's number states that there are approximately 6.022 x 10^23 molecules in one mole of a substance.

Number of molecules = Number of moles × Avogadro's number

Number of molecules = 0.000277 mol × 6.022 x 10^23 molecules/mol

Number of molecules ≈ 1.667 x 10^20 molecules

Therefore, the correct answer is C) 1.67 x 10^20 molecules.

Learn more about Snowflakes

brainly.com/question/33604566

#SPJ11

5 micrograms then 5 milligrams than 5 g then 5 kg

The ionization constant of H₂S is approximately 1.0 x 10⁻⁷.

The ionization constant, also known as the acid dissociation constant (Ka), is a measure of the extent to which an acid dissociates in water. It indicates the degree of ionization of an acid and is typically expressed as the equilibrium constant for the reaction between the acid and water.

In the case of H₂S (hydrogen sulfide), it is a weak acid that can partially dissociate in water to produce hydrogen ions (H⁺) and sulfide ions (HS⁻). The ionization reaction can be represented as follows:

H₂S ⇌ H⁺ + HS⁻

The ionization constant (Ka) represents the equilibrium expression for this reaction. The value of Ka determines the relative strength of the acid. For H₂S, the ionization constant is approximately 1.0 x 10⁻⁷, indicating that it is a weak acid.

This value indicates that H₂S only partially ionizes in water, with a small fraction of H₂S molecules dissociating into H⁺ and HS⁻ ions. The majority of H₂S remains in its molecular form.

It is important to note that the ionization constant can vary depending on factors such as temperature and concentration. The given approximation is a typical value at standard conditions.

To know more about "Ionization constant" refer here:

https://brainly.com/question/30639622#

#SPJ11

Answer:

This explanation could be improved by specifying the two substances being compared and giving more detailed information about their properties, such as their chemical structure, molecular formula, and other physical and chemical characteristics. Additionally, describing why the two substances have different properties, such as differences in bonding type or molecular arrangement, could provide a more comprehensive explanation.

The control mechanism you're referring to, where enzyme action stops due to a buildup of end product, is called A. negative feedback.

Negative feedback occurs when the accumulation of an end product inhibits the initial enzyme responsible for its production. This process helps maintain the optimal levels of substances within the cell and prevents overproduction. Here's a step-by-step explanation:

1. An enzyme catalyzes a reaction, leading to the formation of a product.
2. As the product accumulates, it reaches an optimal level within the cell.
3. When the optimal level is reached, the end product binds to the enzyme or its regulatory site, decreasing the enzyme's activity.
4. As a result, the production of the end product slows down, maintaining a balance within the cell.

This process ensures that resources and energy are not wasted in producing excess product and helps maintain homeostasis within the cell.

Learn more about Negative feedback here:

brainly.com/question/31105398

#SPJ11

The percentage copper recovered is  88.8%.

what is extraction ?

Extraction is the process of selectively removing a compound of interest from a mixture using a solvent. For an extraction to be successful the compound must be more soluble in the solvent than in the mixture. Additionally, the solvent and mixture must be immiscible (not soluble in one another).

When metals are obtained from their ore, they are usually passed through a process of purification called extraction. This remove impurities leaving a lesser mass of pure metal.

From the information in the question;

Initial amount of Cu = 0.502 g

Final amount of Cu = 0.446 g

We know that percentage of copper recovered = final amount of copper/initial amount of copper × 100/1

substituting the values we have;

percentage of copper recovered = 0.446 g /0.502 g × 100/1

= 88.8%

to know more about extraction, click here :

Learn more: brainly.com/question/16885872

#SPJ4

Answer:

Vapor pressure is reduced by the presence of a solid solute in a liquid.

A lower temperature is required to crystallize ice from saltwater.

The boiling point of saltwater is above the boiling point of pure water.

Separation of a solution mixture relies on the properties of the substances in the solution.

Explanation:

By subjecting the two compounds to Jones reagent, you can observe the difference in their reactivity and determine the compound that undergoes oxidation (4-methyl-3-penten-1-ol) and the one that does not (1-methoxy-3-methyl-2-butene).

To distinguish between 1-methoxy-3-methyl-2-butene and 4-methyl-3-penten-1-ol, you can use an oxidizing agent that can react selectively with the alcohol group present in 4-methyl-3-penten-1-ol.

One suitable reagent for this purpose is Jones reagent (a mixture of chromic acid and sulfuric acid). Jones reagent is a strong oxidizing agent that can convert alcohols to their corresponding carbonyl compounds (aldehydes or ketones).

Here's what would happen with each compound:

Methoxy-3-methyl-2-butene does not have an alcohol group, so it would not react with Jones reagent.

4-Methyl-3-penten-1-ol has an alcohol group, and it can be oxidized by Jones reagent to form the corresponding aldehyde or ketone. The specific product obtained would depend on the reaction conditions.

Learn more about Jones reagent from the link given below.

https://brainly.com/question/31666299

#SPJ4

Answer:

salt

Explanation:

The percent yield of copper hydroxide is 84%

From the question, we are to determine the percent yield of copper hydroxide

First, we will determine the theoretical mass

From the given balanced chemical equation, we have

Cu(NO₃)₂ + 2NaOH -- Cu(OH)₂ + 2NaNO₃

This means,

1 mole of copper(II) nitrate reacts with 2 moles of sodium hydroxide to produce 1 mole of copper hydroxide

Therefore,
0.05 mole of copper(II) nitrate reacts with 0.1 mole of sodium hydroxide to produce 0.05 mole of copper hydroxide

The theoretical number of moles of copper hydroxide that is produced is 0.05 mole

Now, for the theoretical mass

Using the formula,

Mass = Number of moles × Molar mass

Molar mass of copper hydroxide = 97.56 g/mol

Then,

Theoretical mass = 0.05 × 97.56

Theoretical mass of copper of hydroxide produced is = 4.878 g

Now, for the percent yield of copper hydroxide

Percent yield is given by the formula,

\(Percent\ yield = \frac{Actual\ yield}{Theoretical\ yield} \times 100\%\)

Then,

\(Percent\ yield\ of\ copper\ hydroxide= \frac{4.1}{4.878}\times 100\%\)

\(Percent\ yield\ of\ copper\ hydroxide= 84\%\)

Hence, the percent yield of copper hydroxide is 84%.

Learn more on Stoichiometry here: https://brainly.com/question/9372758

The rate of change of the concentration of Na₂C₂O4 is -0.0551 M/s.

To determine the rate of change of the concentration of sodium oxalate (Na₂C₂O4), we can use the rate equation:

Rate = (Δ[Na₂C₂O4]) / (Δt)

where Δ[Na₂C₂O4] represents the change in concentration of Na₂C₂O4 and Δt represents the change in time.

In this case, the initial concentration of Na₂C₂O4 is 1.34 M, and after 19.3 seconds, the concentration is 0.276 M.

Substituting the values into the rate equation, we have:

Rate = (0.276 M - 1.34 M) / (19.3 s - 0 s)

Rate = (-1.064 M) / (19.3 s)

Rate = -0.0551 M/s

Therefore, the rate of change of the concentration of Na₂C₂O4 is -0.0551 M/s.

The negative sign indicates that the concentration of Na₂C₂O4 is decreasing over time, as the reactant is being consumed in the reaction.

It's important to note that the rate of a reaction is influenced by various factors, such as the reaction mechanism, temperature, and presence of catalysts. The rate can be determined experimentally by measuring the change in concentration of a reactant or product over a specific time interval.

The given information allows us to calculate the rate of change for the specific reaction involving Na₂C₂O4. However, without additional information about the reaction, it is not possible to determine the exact nature or stoichiometry of the reaction, as well as any other reactants or products involved.

For more such questions on rate of change visit:

https://brainly.com/question/29000078

#SPJ8

Answer:

Explanation: The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol.

Answer:

16.....................

The redox couple with the highest (most positive) redox potential is d. plastocyanin-Cu2+/plastocyanin-Cu.

The redox couple plastocyanin-Cu2+/plastocyanin-Cu does indeed have the highest (most positive) redox potential among the options provided.

Plastocyanin is a copper-containing protein involved in electron transfer within the photosynthetic electron transport chain. Its redox potential is relatively high due to the strong oxidizing properties of copper and its ability to accept and donate electrons during the electron transfer process.

Compared to the other redox couples mentioned in the options, plastocyanin-Cu2+/plastocyanin-Cu has the highest redox potential, making it an essential component in the electron transfer process and contributing to the efficient functioning of photosynthesis.

You can learn more about redox couple at: https://brainly.com/question/30000070

#SPJ11