A gas mixture in a 1.00L reaction vessel at 100ºC contains 4.5 mol of Br(g) and 33.1 mol F2(g). Compte the mole fraction of each gas in this mixture.

When this mixture is heated to 150ºC, Br2(g) and F2(g) react to form BrF5(g) according to the following balanced chemical reaction: Br2(g)+ 5F2(g)---------- 2 BrF5(g). At a certain point, 2.2 mol of BrF5(g) is present in this reaction vessel. Determine the mole fractions of Br2(g), F2(g) and BrF5(g) at this point in the reaction.

Assuming the reaction goes to complection (one or both of the reactants is limiting),

What will be the total pressure inside this vessel? What are the partial pressures of all the components present?

Calculate the root mean squared velocity of the components present after the reaction is complete?

A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 ?C. The initial concentrations of Pb2+ and Cu2+ are 5.30

Ammonium nitrate is the most commercially important chemical product containing the ammonium ion.

1.List and describe at least two grades of commercially available ammonium nitrate..

2.Why does OSHA require employers to store bulk quantities of ammonium nitrate within a bin that is clean and free of contaminants? Give an example of a contaminant, and describe its interaction with ammonium nitrate..

Your total response must be at least 200 words in length.

In a titration of 47.76 mL of 0.3886 M nitrous acid with 0.3886 M aqueous sodium hydroxide, what is the pH of the solution when 47.76 mL of the base have been added?

A rigid container whose volume can be varied with the use of a piston contains 2.53 mol H₂ gas at STP.

(a) What is the volume of the gas?
_____L

(b) The container is cooled to 209 K. The piston is held fixed so the volume does not change. What is the new pressure inside the container?
____atm

(c) The temperature of the container is held at 209 K and 1.55 mol He gas is added to the container. The pressure inside the container is held constant, but the piston is released so the volume of the container can vary. What is the final volume of the container?
_____ L

(d) What are the partial pressures of H₂ and He in the container in part (c)?

(e) The piston on the container in part (c) is set to maintain a constant pressure of 1 atm. The container is then heated from 209 K to 380 K.What is the minimum amount of heat that must be added to the container for it to reach 380 K?
______ J

Calculate ΔG° for the following reaction as written

Ni²⁺ (aq) + Sn (s) → Ni (s) + Sn²⁺ (aq)

given the following reduction half-reactions and standard reduction potentials.

Sn²⁺ (aq) + 2 e^- → Sn (s)      E° = -0.15V

Ni²⁺ (aq) + 2 e^- → Ni (s)      E° = -0.25V

Calculate the density of oxygen, O 2 , under each of the following conditions: STP 1.00 atm and 35.0 ∘ C Express your answers numerically in grams per liter. Enter the density at STP first and separate your answers by a comma.

What is the molar solubility of AgCl in 0.1 M HCl? How many grams of silver chloride will dissolve in 500 mL of 0.1 M HCl? show all calculations

identify and then write the balance chemical equation for each salt below that will yield a basic solution in water

i. NH4Br ii. NaCN iii. BaF2 iv. NaNO3

A total volume of 33.15-mL of 0.1053-M NaOH is needed to titrate 24.5-mL of benzoic acid. (Benzoic acid is a monoprotic acid with a pKa = 4.20). Determine the pH when the following volumes of the 0.1053 M NaOH have been added

a) 30.00 mL (before the equivalence point)?

b) 33.15 mL (at the equivalence point)

c) 36.00 mL (after the equivalence point)

NH3 is a weak base (Kb = 1.8 × 10–5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.038 M in NH4Cl at 25 °C?

Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.150 M HClO(aq) with 0.150 M KOH(aq). The ionization constant for HClO can be found here.

(a) before addition of any KOH (b) after addition of 25.0 mL of KOH (c) after addition of 35.0 mL of KOH (d) after addition of 50.0 mL of KOH (e) after addition of 60.0 mL of KOH

a. Use standard cell potentials to show what reaction would occur if you placed a strip of Cr in a solution of equal concentrations of NiCl2 and Al(NO3)3.

b. Zinc is plated onto iron to protect the iron from corrosion in a process called galvanization. How long would it take to plate 100g of zinc onto “sheet metal” in a ZnCl2 bath running at a current of 7.5A?

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You are shoveling bituminous Pennsylvania coal (with an energy content of 13,870 Btu/lb) from a coal box into a furnace. On average, with each lift and throw, you raise a 1.8 kg shovel containing 4.7 kg of coal by a height of 0.85 m. Assume your body is working with an efficiency of 15.9%. How many thousands of times more chemical energy is in the coal you move than is in the sugars and fats your body is burning to move it?