what is the molarity of a solution made by dissolving 0.01287 g ki to make 112.4 ml of solution?

The volume of the helium balloon after 63.0 hours is 105.9 L

The Ideal Gas Law is PV = nRT, where P is the pressure of a gas, V is its volume, n is the number of moles of the gas, T is its temperature, and R is the ideal (or universal) gas constant.

R = 0.0821 L atm/mol K

First, we have to find the initial pressure of the helium inside the balloon using the Ideal Gas Law,

PV = nRT

P = nRT / VP = (4.50 mol x 0.0821 L atm / mol K x 293 K) / 130.0 L= 0.084 atm.

The rate of helium leakage per hour is 10.0 mmol/hr which is equal to 0.01 mol/hr. After 63.0 hours, the amount of helium leaked out of the balloon is 0.01 mol/hr x 63.0 hr = 0.63 mol. The amount of helium remaining inside the balloon is 4.50 mol - 0.63 mol = 3.87 mol.

Now we can use the Ideal Gas Law to find the volume of the balloon after 63.0 hours.

P1V1 = n1RT1

V1 = n1RT1 / P1V1 = (3.87 mol x 0.0821 L atm / mol K x 293 K) / 0.084 atm= 105.9 L

Therefore, the volume of the balloon after 63.0 hours is 105.9 L.

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The pH of the resulting solution will be approximately 7.

To determine the pH of the resulting solution when hydroiodic acid and barium hydroxide are combined, we need to consider the neutralization reaction that occurs between the acid and base.

The balanced chemical equation for the reaction is:

2 HI (aq) + Ba(OH)2 (aq) → BaI2 (aq) + 2 H2O (l)

Since hydroiodic acid is a strong acid and barium hydroxide is a strong base, the resulting solution will be salt, which is a neutral pH solution. Therefore, the pH of the resulting solution will be close to 7, indicating neutrality.

It's important to note that if there is any excess acid or base remaining after the neutralization reaction, it can affect the pH of the solution. However, since the concentrations of hydroiodic acid and barium hydroxide provided in the question are equal (0.300 M and 0.150 M), it suggests that the reactants are stoichiometrically balanced, resulting in a neutral pH solution.

Therefore, the pH of the resulting solution will be approximately 7.

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The solution can be determined by calculating the concentration of copper ions (Cu2+) in the solution using the given Ksp value and the concentration of chloride ions.

The solubility product constant (Ksp) is a measure of the solubility of a compound in a solution. For CuCl2, the Ksp value is given as 1.9 x 10-7. This value represents the equilibrium constant for the dissociation of CuCl2 into copper ions (Cu2+) and chloride ions (Cl-).

According to the balanced equation for the dissociation of CuCl2, 1 mole of CuCl2 dissociates to yield 1 mole of Cu2+ ions and 2 moles of Cl- ions. Therefore, the concentration of Cu2+ ions is equal to the concentration of chloride ions.

Given that the chloride ion concentration is 6.0 x 10-3 M, we can conclude that the concentration of Cu2+ ions in the solution is also 6.0 x 10-3 M.

Hence, the solution of CuCl2 with a chloride ion concentration of 6.0 x 10-3 M also has a concentration of Cu2+ ions equal to 6.0 x 10-3 M. This concentration is determined based on the stoichiometry of the dissociation reaction and the given concentration of chloride ions.

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Answer:

What are the pros of coal energy? ans :

Huge Global Reserves.

Not an Intermittent Energy Source.

Reliable Fuel.

Inexpensive Energy Source.

Minimal Wastes, Consumable Byproducts

Smokeless Alternatives

Compatible With Other Energy Sources.

Yes, benzoyl peroxide and salicylic acid can be used together. When used together, these two ingredients can be very effective in treating acne-prone skin.

Benzoyl peroxide is a powerful antibacterial agent that helps to reduce the number of bacteria on the skin, while salicylic acid is a keratolytic agent, meaning it helps to break down dead skin cells and unclog pores. Together, these two ingredients work to reduce the number of bacteria on the skin, unclog pores, and reduce inflammation associated with acne. It is important to note that these two ingredients should not be used in a single product. Instead, they should be applied separately at different times of the day. For example, benzoyl peroxide should be applied in the morning and salicylic acid should be applied at night. Additionally, it is important to be mindful of the concentration of each ingredient, as using too much of either can be irritating and cause dryness. Overall, using benzoyl peroxide and salicylic acid together can be a very effective way to reduce acne and clear up blemishes.

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According  to stoichiometry and concept of Avogadro's number there are 3.61×10²⁴ particles for 4 moles of KClO₃.

As 2 moles of potassium chlorate gives 3 moles of oxygen , thus 4 moles of potassium chlorate will give 4×3/2=6 moles , 6 moles have 6×6.023×10²³=3.61×10²⁴ particles.

Thus,  there are 3.61×10²⁴ particles for 4 moles of KClO₃.

What is stoichiometry?

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Answer:

B. Geostationary Operational Environmental Satellite

Explanation:

Hope this helps!

Answer:

B

Explanation:

I’m studying it for you!

The lactose is an inducible, non-functional operon, which means that the genes are typically either translated or not.

Lactose is a naturally occurring sugar found within milk and other dairy products such yogurt and ice cream. It is produced when two additional sugar, glucose and galactose, combine. The body converts lactose into these two sugars using an enzyme called lactase so that it may be digested.

various forms of lactose intolerance The most prevalent form of lactose intolerance is primary, which develops as people age. secondary lactose intolerance (caused by disease or harm), Developmental lactose intolerance, or congenital lactose intolerance (having the condition from birth).

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The strongest interparticle force is ionic bonding forces.

Sodium cations (Na+) and dihydrogen phosphate anions (H2PO4-) make up the ionic compound NaH2PO4. Electrostatic attraction between positively charged cations and negatively charged anions is what creates ionic bonds.

The Na+ and H2PO4- ions organize themselves into a regular lattice structure in the solid state, which is kept together by powerful electrostatic forces. These ionic bonds are frequently more powerful than other interparticle forces like hydrogen bonding, dipole-dipole forces, and dispersion forces.

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Missing parts;

What is the strongest interparticle force in a sample of solid NaH2PO4 ? Select the single best answer. dipole-induced dipole forces dispersion forces dipole-dipole forces ion-induced dipole forces hydrogen bonding forces ionic bonding forces ion-dipole forces

Answer:

41.09% B N. The formula in EDTA

Explanation:

Answer:

The answer will be listed below.

Explanation:

Kinetic Energy- Energy of motion, increases with mass

Potential Energy- Stored energy, increases with height

Both- Increases with velocity

To estimate the equilibrium composition at 400K and 1 atm for the given gaseous reactions.At equilibrium, we can expect a higher concentration of neo-C₅H₁₂(g) compared to n-C₅H₁₂(g).

n-C₅H₁₂(g) ⇌ iso-C₅H₁₂(g) (∆G° = 40.195 kJ/mol)

n-C₅H₁₂(g) ⇌ neo-C₅H₁₂(g) (∆G° = 37.640 kJ/mol)

K = exp(-∆G°/RT)

For the reaction n-C₅H₁₂(g) ⇌ iso-C₅H₁₂(g):

K₁ = exp(-40.195 kJ/mol / (8.314 J/(mol·K) * 400 K)) = 2.34 × 10^-14

For the reaction n-C₅H₁₂(g) ⇌ neo-C₅H₁₂(g):

K₂ = exp(-37.640 kJ/mol / (8.314 J/(mol·K) * 400 K)) = 1.46 × 10^-12

Since K₂ (1.46 × 10^-12) is larger than K1 (2.34 × 10^-14), the reaction n-C₅H₁₂(g) ⇌ neo-C₅H₁₂(g) is expected to be more favored.

Therefore, at equilibrium, we can expect a higher concentration of neo-C₅H₁₂(g) compared to n-C₅H₁₂(g).

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Answer:

Standard acid-base reaction in two stages:

Na2CO3 + HCl → NaHCO3 +NaCl

NaHCO3 + HCl → NaCl + CO2 + H2O

If only a small quantity of acid is added (and the overall solution remains above pH 7), the reaction would stop at stage 1 and you’d be left with an aqueous solution of sodium chloride and sodium bicarbonate. Adding more acid would lead to the bicarbonate being converted to carbon dioxide and water, with the CO2 coming out of solution as a gas and more sodium chloride being produced.

Answer:

We can use Gay-Lussac's Law to solve this problem, which states that the pressure of a gas is directly proportional to its temperature, provided the volume and the number of moles of the gas are constant.

Using this law, we can write:

P1/T1 = P2/T2

where P1 is the initial pressure, T1 is the initial temperature, P2 is the final pressure, and T2 is the final temperature.

Substituting the given values, we get:

P1 = 106 kPa

T1 = 47°C + 273.15 = 320.15 K

T2 = 77°C + 273.15 = 350.15 K

So, P2/T2 = P1/T1

P2 = P1 × (T2 / T1)

P2 = 106 kPa × (350.15 K / 320.15 K) = 115.44 kPa

Therefore, the new pressure of the hydrogen gas will be 115.44 kPa when it is heated to 77°C at constant volume.

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The products of this reaction are A - a neutral diamagnetic replacement product. B - an ionic diamagnetic replacement product.

The response of the iodocarbonyl with triphenylphosphine gives a neutral diamagnetic replacement product as well as an ionic diamagnetic replacement product.

The arrangement of the impartial and ionic species from the iodocarbonyl is as the situations:

A: Iodocarbonyl + Triphenylphosphine → neutral diamagnetic replacement product

The impartial diamagnetic replacement product can be addressed as:

C≡O + P(C6H5)3 → A

B: Iodocarbonyl + Triphenylphosphine → Ionic diamagnetic replacement product

The ionic diamagnetic replacement product can be addressed as:

C≡O + P(C6H5)3 → B+ + P(C6H5)3-

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Assuming excess zinc, 2.33 moles of hydrochloric acid would produce 645.13 grams of zinc chloride.

The balanced chemical equation for the reaction between hydrochloric acid and zinc is: Zn + 2HCl → ZnCl2 + H2.

The balanced chemical equation for the reaction between hydrochloric acid (HCl) and zinc (Zn) is:

Zn + 2HCl → ZnCl2 + H2

This equation tells us that 1 mole of zinc reacts with 2 moles of hydrochloric acid to produce 1 mole of zinc chloride and 1 mole of hydrogen gas. Therefore, to determine how much zinc chloride is produced when 2.33 moles of hydrochloric acid reacts completely, we need to use stoichiometry.

First, we need to determine how many moles of zinc chloride would be produced from 2.33 moles of hydrochloric acid. From the balanced equation, we know that the ratio of hydrochloric acid to zinc chloride is 2:1. Therefore, the number of moles of zinc chloride produced would be half the number of moles of hydrochloric acid used:

2.33 moles HCl x (1 mole ZnCl2 / 2 moles HCl) = 1.165 moles ZnCl2

Next, we need to convert moles of zinc chloride to grams. The molar mass of zinc chloride is the sum of the atomic masses of one zinc atom and two chlorine atoms:

1 zinc atom x 65.38 g/mol = 65.38 g/mol Zn

2 chlorine atoms x 35.45 g/mol = 70.90 g/mol Cl

Total molar mass = 65.38 g/mol + 70.90 g/mol = 136.28 g/mol ZnCl2

Now we can use this molar mass to convert moles of zinc chloride to grams:

1.165 moles ZnCl2 x 136.28 g/mol ZnCl2 = 158.3 grams ZnCl2

Therefore, 2.33 moles of hydrochloric acid reacting completely would produce 158.3 grams of zinc chloride.

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After the second stage of something like the pyruvate dehydrogenase process, thioester bonds form.

Thioesters have a significant impact on metabolism. Particularly in the case of metabolism of fatty acids. Acetyl CoA, the major metabolite, seems to be a thioester that would be primarily created by the oxidative cleavage of dopamine or by the breakdown of fatty acids.

For instance, a thiolate (RS-) is just a weaker bases and better donating group than an alcoxide, making a thioester more sensitive than an ester (RO-). Remember from paragraph 6 that a thiol's pKa is approximately 10, whereas an alcohol's pKa is 15 or higher this means that a larger conjugate acid results in a lesser conjugate base.

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Answer:

they are as follows

Explanation:

a. Origin And Measurement Of Earthquakes

b.Effects Of Earthquakes On Buildings

c.Seismic Design Strategies And Devices

Answer: Origin And Measurement Of Earthquakes, Effects Of Earthquakes On Buildings, Seismic Design Strategies And Devices.

Explanation:

Answer:

They are positively charged

Explanation:

Hope it will help you

Protons are the sub-atomic particles present within the nucleus of the atom. The protons determine the atomic number and carry a positive charge. Thus, options c and d are correct.

Protons have been discovered as the smallest unit or particle of the atom. They are present in the nucleus of the atom situated in the middle along with the neutrons. The protons alone are the characteristics to determine the atomic number and property of the element in the periodic table.

The protons have also been discovered to have a positive charge (+1) on them that binds the atom and electron by the attractive forces. They are heavier than the other particles and are the determinant of the chemical element.

Therefore, options c and d. protons are equivalent to atomic numbers and carry a positive charge is correct.

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Answer:

1.09 centimeters

Explanation:

Hope this helps!

Subtracting 7.11 cm from 8.2 cm results in 1.09 cm. 8.2 cm - 7.11 cm = 1.09 cm.

To subtract 7.11 cm from 8.2 cm, simply need to subtract the numerical values.

Subtraction is an arithmetic operation that involves finding the difference between two numbers. It is one of the basic mathematical operations and is often denoted by the symbol "-".

When subtracting, start with a minuend (the number are subtracted from) and subtract a subtrahend (the number being subtracted) from it. The result is called the difference.

The order of the numbers matters. When subtracting a smaller number from a larger number, the difference will be positive. However, if subtract a larger number from a smaller number, the difference will be negative.

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The complete question is:

Subtract 7.11 cm from 8.2 cm.

Answer:

5

Explanation:

Answer:

2 in the first and 4 in the second

Explanation:

in an atom the first energy level has only 2 spaces for electrons, as the number electrons goes up so does the amount of energy levels

To calculate the total pressure in the flask, we need to convert all the partial pressures to the same unit and then add them together. We can convert the partial pressures of oxygen and ammonia to atm using the following conversions:

1 atm = 760 torr

1 atm = 101.325 kPa

Partial pressure of oxygen in atm = 643 torr / 760 torr/atm = 0.846 atm

Partial pressure of ammonia in atm = 2865 kPa / 101.325 kPa/atm = 28.27 atm

Now we can add up all the partial pressures in atm:

Total pressure in atm = Nitrogen partial pressure in atm + Oxygen partial pressure in atm + Ammonia partial pressure in atm

Total pressure in atm = 9.84 atm + 0.846 atm + 28.27 atm

Total pressure in atm = 38.956 atm

Therefore, the total pressure in the flask is 38.956 atm (rounded to three decimal places).

Answer:

its A

Explanation:

Answer:

C. Ions combine in only one ratio

Explanation:

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wavelength = speed of light  ÷  frequency  

wavelength =  (2.998 × 10⁸  m/s)  ÷ (1.41 x 10⁹  /s)  

                    =   2.126  × 10⁻¹ m