g aqueous solution of 0.10 M HA and , use organic solvent to extract HX and HY for two times. Each time uses 10 mL. If Kc is 3.0 for HX and 0.5 for HY, what is the separation factor of HX and HY in the second time

Answer:

Double

Explanation:

When the volume of a gas is reduced by ½ its pressure will double because there is less space for the gas particles to move around in so they hit the surface of the container more often with more force. This means the pressure increases.

Answer:

32,256g/mol

Explanation:

n= V/Vm

n = 0.25/22.4

n = 0.01

0.01 = 0.36/M

M = 0.36/0.01

Answer:

My Very Excellent Mother Just Served Us Nine Pickles

Explanation:

Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto

Answer:

My Very Excellent Mother Just Served Us Nine Pickles

Explanation:

It is basically a mnemonic for the order of the nine planets lol

Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto

Answer

1 Mg + 2 HCl 1 MgCl₂ + 1 H₂

(a) 182.29 grams HCl

(b) 174.71 grams

(c) .3.0 moles of hydrogen gas

Explanation

The unbalanced equation given is:

___Mg + ___HCl ___MgCl2 + ___H2

The balanced equation is

1 Mg + 2 HCl 1 MgCl₂ + 1 H₂

(a) What mass of HCl is consumed by the reaction of 2.50 moles of magnesium?

The first step is to calculate the moles of HCl consumed.

From the balanced equation;

1 mole of Mg consumed 2 moles of HCl

So, 2.50 moles of Mg will consume

The final step is to convert 5.0 moles of HCl to mass using the mole formula.

Molar mass of HCl = 36.458 g/mol

Therefore, the mass of HCl consumed by the reaction of 2.50 mol of Mg is 182.29 grams.

(b) What mass of MgCl2 is produced if 3.67 moles of HCl react?

Also, the first step is to calculate the moles of MgCl₂ produced.

From the balanced equation;

2 moles of HCl produced 1 mole of MgCl₂

So, 3.67 moles of HCl will produce

The final step is to convert 1.835 mol MgCl₂ produced to grams using the mole formula.

Molar mass of MgCl₂ = 95.211 g/mol

The mass of MgCl₂ produced is 174.71 grams.

c. How many moles of hydrogen gas are produced when 3.0 moles of magnesium react?

From the balanced equation above;

1 mole of Mg produced 1 mole of H₂

Thus, 3.0 moles of Mg will produce

Hence, the moles of H₂ produced is 3.0 moles.

If you start with 52 kg of a radioactive isotope, 13 kg of the isotope remains. The fraction of the isotope remains is 25%.

Radioactive isotopes decay over time, and the amount of the original isotope remaining can be calculated using the isotope's half-life. The half-life of an isotope is the amount of time it takes for half of the atoms in a sample to decay. The half-life of the isotope in question is unknown, so it cannot be determined.

However, we can use the half-life to calculate the amount of the original isotope remaining after a given period of time.  After one half-life, half of the original isotope will have decayed. So after two half-lives, only a quarter of the original isotope will remain.

A) If we start with 52 kg of a radioactive isotope, and only a quarter of it remains after two half-lives have elapsed, then the amount remaining can be calculated as follows:

52 kg × 0.25 = 13 kg

Therefore, 13 kg of the isotope remains.

B) To calculate the fraction of the isotope remaining, we need to divide the amount remaining by the original amount:

Fraction remaining = 13 kg / 52 kg

= 0.25

Therefore, 0.25 or 25% of the isotope remains.

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It moves to a lower energy level.

When electrons in an atom move from a lower energy level to a higher energy level. Then these higher energy electrons release their "extra" energy in the form of a photon which is a form of light and move back down to their original energy level. while on the other hand, when energy electrons absorb energy in the form of a photon they move to a higher energy level from their original energy level.

We can say that electron in an excited state release energy and comes to a lower state. Then the electron releases a photon. The energy present in that photon is related to the difference between the two levels or states in which the electron moves.

So we can conclude that an electron emits energy, it moves to a higher energy level.

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The ΔHf° (heat of formation) for acetic acid is approximately -1119.29 kJ/mole.

To find the ΔHf° (heat of formation) for acetic acid (HC₂H₃O₂), use Hess's Law and the given thermochemical data.

The given equation for the combustion of acetic acid is:

HC₂H₃O₂(l) + 2O₂(g) → 2CO₂(g) + 2H₂O(l) ΔH = -875 kJ/mole

The formation of carbon dioxide (CO₂):

C(s) + O₂(g) → CO₂(g) ΔH = -394.51 kJ/mole

The formation of water (H₂O):

H₂(g) + 1/2O₂(g) → H₂O(l) ΔH = -285.8 kJ/mole

Now, rearrange these reactions to obtain the formation reaction for acetic acid:

HC₂H₃O₂(l) = C(s) + 2H₂(g) + 1/2O₂(g)

Adding the enthalpy changes of the individual reactions:

ΔHf° (acetic acid) = ΣΔHf° (products) - ΣΔHf° (reactants)

ΔHf° (acetic acid) = [2ΔHf° (CO₂)] + [2ΔHf° (H₂O)] - [ΔHf° (C)] - [ΔHf° (H₂)] - [1/2ΔHf° (O₂)]

Substituting the values from the given thermochemical data:

ΔHf° (acetic acid) = [2(-394.51 kJ/mole)] + [2(-285.8 kJ/mole)] - [0 kJ/mole] - [0 kJ/mole] - [1/2(-875 kJ/mole)]

Calculating the expression:

ΔHf° (acetic acid) ≈ -1119.29 kJ/mole

Therefore, the ΔHf° (heat of formation) for acetic acid is approximately -1119.29 kJ/mole.

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Answer:  The combustion of methane (CH4) with O2.

Explanation:  This is a chemical reaction involving carbon:

 CH4 + 2O2 = CO2 + 2H2O

Answer:

A is √34

Explanation:

We can solve for the hypotenuse "A" using the Pythagorean theorem.  

a²+b²=c²

3²+5²=c²

9+25=c²

34=c²

√c=√34

c=√34 --> A

Answer:

The awser is D.

The amount of aluminum when 9.81 grams of aluminum oxide (Al₂O₃) decompose is 5.20 grams.

The number of grams of aluminum metal produced can be calculated using stoichiometry.

First, we need to determine the molar mass of aluminum oxide (Al₂O₃) and aluminum (Al). The molar mass of Al₂O₃ is approximately 101.96 g/mol (27.0 g/mol for each Al and 16.0 g/mol for each O). The molar mass of aluminum (Al) is approximately 27.0 g/mol.

Next, we can set up a conversion factor based on the stoichiometry of the reaction:

(9.81 g Al₂O₃) x (1 mol Al₂O₃ / 101.96 g Al₂O₃) x (2 mol Al / 1 mol Al₂O₃) x (27.0 g Al / 1 mol Al) ≈ 5.20 grams of aluminum metal produced.

So, when 9.81 grams of aluminum oxide decompose, approximately 5.20 grams of aluminum metal are produced.

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There is a direct correlation between pressure and temperature, with an increase in temperature resulting in an increase in pressure and a decrease in temperature resulting in a decrease in pressure. This relationship is expressed by the ideal gas law and can be explained by the kinetic molecular theory.

When temperature increases, the pressure of collisions that occur between molecules also increases. This statement is based on the kinetic molecular theory. This is because the kinetic energy of the molecules increases with an increase in temperature, which results in an increase in the speed of the molecules.

Consequently, the rate of collisions between molecules increases, which results in an increase in the pressure. This correlation between pressure and temperature is expressed by the ideal gas law. According to the ideal gas law, pressure is directly proportional to temperature when the volume and the number of molecules are constant.

This relationship can be expressed mathematically as P/T = k, where P is the pressure, T is the temperature, and k is a constant. Therefore, when the temperature increases, the pressure also increases, and when the temperature decreases, the pressure decreases.

This law states that pressure is directly proportional to temperature when volume and the number of molecules are constant. Therefore, an increase in temperature will lead to an increase in pressure, and a decrease in temperature will lead to a decrease in pressure.

According to the kinetic molecular theory, an increase in temperature increases the kinetic energy of molecules, resulting in an increase in the rate of collisions between molecules and an increase in pressure. This relationship is expressed by the equation P/T = k, where P is pressure, T is temperature, and k is a constant.

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Answer:

C) A covalent bond formed with an unequal sharing of electrons

Explanation:

A polar covalent bond is the unequal sharing of electrons in a covalent bond

The product of molar concentration of ion present in chemical reactants raised to the power of number of ions produced per chemical compound in a saturated solution is called: solubility product.

Solubility product can be defined as a product of the molar concentration of ion present in two or more chemical reactants raised to the power of number of ions produced per chemical compound in a saturated solution.

Mathematically, the solubility product is given by this formula:

\(K_{sp} = [A^+]^x[B^{-}]^y\)

Where:

In Chemistry, the solubility product is typically used as an equilibrium constant for the dissolution of a chemical compound in a saturated solution.

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After the electrophorus is momentarily connected to ground and then disconnected from it, the charge-state of the electrophorus is positive.

Here, correct answer will be

This is because when the electrophorus is grounded, the negative charge stored on its upper plate is transferred to the ground, leaving the upper plate with a positive charge.

The positive charge is then stored on the upper plate when the electrophorus is disconnected from ground, as the charge is unable to flow from the plate back to the ground. This process is known as electrostatic induction and is used to create a static electric charge on the electrophorus, which can then be used to charge other objects.

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0.582 mol are present in 21.2 g hydrochloric acid. Therefore, the correct option is option A among all the given options.

A fundamental unit used in chemistry to measure the amounts of compounds is the mole, which is sometimes indicated by the symbol "mol." By making it possible for us to count atoms and molecules in a useful way, it creates a link between the atomic and macroscopic sizes. Simply expressed, one mole is equivalent to the quantity of a substance that includes exactly 12 grammes of carbon-12's exact number of atoms. In many facets of chemistry, including calculating the amount of substance in a reaction, balancing chemical equations, figuring out the concentration of solutions, and forecasting the mass of reactants or products, the mole concept is essential.

moles = mass / molar mass

moles = 21.2 g / 36.46 g/mol

          ≈ 0.582 mol

Therefore, the correct option is option A.

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As a result, the C2 molecule has a double bond and has a bond order of 2. While C2 is diamagnetic, B2 is paramagnetic. The bond order of the diatomic carbon anion is three.

Above and below the ring, respectively, are the second and third carbon to carbon bonds. A triple bond would point away from the two carbon atoms if it were to form. The other three bonds would need to be severely bent in order for this bond to exist, which is extremely inefficient in terms of energy.

92.4 kcal mol-1 and 87.4 kcal mol-1 for the bonds, 72.1 kcal mol-1 for the strong bond, and 9.7 kcal mol-1 are the predicted values for C2.

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To calculate the volume of the hydrogen atom, we can use the formula for the volume of a sphere, which is V = (4/3)πr^3, where r is the radius of the sphere.

In this case, the radius of the electron cloud is about 5.3 x 10^-11 m, so we can plug that into the formula:
Vatom = (4/3)π(5.3 x 10^-11)^3
Vatom = 1.6 x 10^-30 m^3
So, the volume of the hydrogen atom is about 1.6 x 10^-30 cubic meters. This is an incredibly small volume, but it's important to remember that atoms are incredibly tiny particles. In fact, you would need more than 100 trillion hydrogen atoms lined up side by side to span just 1 centimeter!

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The correct formula for the compound formed between barium and sulfur is BaS. Ba

The correct formula for the compound formed between barium and sulfur is BaS. Ba represents the chemical symbol for barium, and S represents the chemical symbol for sulfur. When barium and sulfur combine, they form an ionic compound with a 1:1 ratio of barium ions (Ba2+) and sulfide ions (S2-). The compound BaS indicates that one barium atom combines with one sulfur atom to form an ionic compound. In BaS, barium has a 2+ charge (Ba2+), and sulfur has a 2- charge (S2-).

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Answer:

Hydrogen gas (H₂) + Oxygen gas (O₂) → Water (H₂O)

Explanation:

Hydrogen reacts with oxygen to form water. The reactants are hydrogen and oxygen and the product is water.

Answer:

Word Equation:

Hydrogen + Oxygen = Water

Hydrogen gas reacts with Oxygen gas to give Water.

The chemical Reaction is as follows:

    \(2H_{2} + O_{2}\)   =>    \(2H_{2}O\)

The Correct answer is 50 Meters,Displacement is defined to be the change in position of an object.

Displacement is the term used to describe the shift in an object's location or the shortest path/length between two places. With such a magnitude and orientation, it is a vector quantity.

Displacement=Δx=x f −x 0

The student's path fortunately consisted of straight lines and right angles. Therefore we can use the pythagorean theorem to find the distance between where the student's path started and stopped.

A2+B2= C2.

We Give

meters east in for A, 40.

meters north for B  60 .

Distance =40+60+20=110m

Displacement OC= Root of (40 ²+30 ²)

                            = 50 m

That's the length of the distance between where the student started and where the student ended up.

A2 plus B2 equals C2. We plug 30. meters east in for A, and 40. meters north for B. 30. meters squared plus 40. meters squared equals 2500 meters2. Then we take the square root of that number and get 50. meters.

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Answer:

Sound waves travel at different speeds when traveling through different materials

Explanation:

This is because in water the particles are more closely packed together, therefore making the sound travel faster and sound louder. The opposite is the same for air.

Answer:

Lose energy

Explanation:

The molecules are moving from a liquid (molecules slide past one another) to a solid (molecules barely move) so are losing energy

Answer:

If it's multiple choice it's 2 and 3, if not I think the best answer is 2, but I'm not exactly sure.

When an alpha particle is emitted from an unstable nucleus, the atomic mass number of the nucleus decreases by 4 and the atomic number decreases by 2.

This is because the alpha particle contains two protons and two neutrons, which means it has an atomic mass number of 4 and an atomic number of 2. When it is emitted from the nucleus, it takes away these particles from the parent nucleus, resulting in a decrease in both atomic mass number and atomic number.

Radioactivity is the process of emitting radiation from unstable atomic nuclei. There are three main types of radiation that can be emitted from a nucleus: alpha particles, beta particles, and gamma rays. When an alpha particle is emitted from an unstable nucleus, it causes a decrease in the atomic mass number of the nucleus.

This is because an alpha particle contains two protons and two neutrons, which means it has an atomic mass number of 4 and an atomic number of 2. When it is emitted from the nucleus, it takes away these particles from the parent nucleus, which results in a decrease in the atomic mass number and atomic number.

There are several reasons why an atomic nucleus may emit an alpha particle. One reason is that the nucleus is too large and unstable, and it needs to release some of its energy to become more stable. Another reason is that the nucleus has too many protons and needs to reduce its atomic number to become more stable.

Whatever the reason, the emission of an alpha particle is an important process in nuclear physics and has many applications in industry, medicine, and research

In summary, when an alpha particle is emitted from an unstable nucleus, the atomic mass number of the nucleus decreases by 4 and the atomic number decreases by 2. This is because the alpha particle contains two protons and two neutrons, which means it has an atomic mass number of 4 and an atomic number of 2.

When it is emitted from the nucleus, it takes away these particles from the parent nucleus, resulting in a decrease in both atomic mass number and atomic number.

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If an inhibitor binds the enzyme reversibly, the type of bond is there between the enzyme and inhibitor is non-covalent bond

Non-covalent bonds are relatively weak chemical interactions that occur between atoms or molecules. Some common types of non-covalent bonds include hydrogen bonds, van der Waals forces, and electrostatic interactions. The type of bond between the enzyme and inhibitor will depend on the specific chemical structures of the two molecules. In some cases, inhibitors may bind to enzymes via multiple non-covalent interactions, forming a complex network of bonds that contribute to the stability of the complex.

Non-covalent bonds are relatively weak, inhibitors that bind reversibly can be displaced from the enzyme by other molecules, allowing the enzyme to resume its normal activity. This can be advantageous in situations where the inhibitor is only needed temporarily, or where it is important to regulate the activity of the enzyme in response to changing conditions. So therefore if an inhibitor binds the enzyme reversibly, there is likely to be a non-covalent bond between the enzyme and inhibitor.

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Answer:

\(\boxed {\boxed {\sf FeBr_3}}\)

Explanation:

We can assume that this is a neutral compound, meaning the charges of the ions are balanced.

We are given: Iron (III) Bromide.

We want to find the chemical formula.

First, find the symbols of the elements.

Next, find the charges on the ions.

The Roman Numeral 3 in parentheses (III). This indicates the iron cation has a charge of +3.

We need to balance out the charge of +3 with the bromine. Bromine can have a charge of +5, +1, and -1. Since we already have a cation (positive ion), bromine must be an anion (negative ion). We also know the charge must be negative to balance out the compound.

But, the charge is only -1. That would still leave the compound unbalanced. Therefore, we must have 3 bromine atoms to balance out the iron. The 3 will become a subscript.

So, put all the information together and write the formula:

FeBr₃

A chemical formula lists the constituent elements of a compound together with the number of atoms in each element's smallest unit, such as a molecule or formula unit. Here the formula for Iron (III) Bromate is FeBr₃.

A compound's chemical composition is symbolically represented by its chemical formula. Chemical formulas reveal the elements that make up a compound's molecules as well as the ratio in which their atoms combine to create those molecules.

The sorts of atoms and their numbers in an element or compound are described by a chemical formula. Each element's atoms are denoted by one or two distinct letters. a collection of chemical symbols indicating the constituent elements and their corresponding ratios.

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Indicator paper is used to determine the pH level of a substance. It contains chemicals that change color in response to different pH levels.

By comparing the color change to a reference chart, one can determine the acidity or alkalinity of a solution.

To clearly test indicator paper, two suitable substances would be lemon juice and baking soda. Lemon juice is acidic, so it would cause the indicator paper to change color in the acidic range. Baking soda, on the other hand, is alkaline, resulting in a color change in the alkaline range.

Measuring acidity level is crucial to protect against botulism because the bacteria that causes botulism, Clostridium botulinum, thrives in low-acid environments. By measuring the acidity level, we can ensure that the pH is below 4.6, which inhibits the growth of the bacteria and prevents toxin production.

Salsa may be susceptible to containing the type of bacteria that causes botulism because it often contains low-acid ingredients like onions, peppers, and garlic. If not properly preserved or stored, these ingredients can create an environment favorable for the growth of Clostridium botulinum.

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