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Gas Laws

Molecular Mass Calculation

The density of benzene vapor at 100 C* and 650 mmHg is 2.18g/L. Calculate the molecular mass. (Hint D=n(mol. Weight)/vol.=P(mol. Weight)/RT)

Total Volume of Gas Collected

Potassium chlorate, KClO3, decomposes when heated: KClO3 (s) ® KCl (s) + 3/2 O2 (g) 1.00 gram of potassium chlorate is completely decomposed and the oxygen is collected over water at 25°C and 0.99 atm. Calculate the total volume of gas collected. (The vapor pressure of water at 25°C is 23.8 torr).

Calculating volume at STP

In different containers, you have 9.0 g of water vapor(assume this is possible), 16 g of HC4, and 44.0 g of carbon dioxide, all under standard conditions of temperature and pressure. Calculate the volumes and tell which occupies the smallest volume.

Determining the volume inside a bulb w/ a gas in it

An ideal gas at 650 mm Hg pressure occupies a bulb of unknown volume. A certain amount of the gas was withdrawn and found to occupy 1.52 mL at 1.00 atm. The pressure of the remaining gas in the bulb was found to be 600 mm Hg. Assuming that all the measurements were made at the same temperature, calculate the volume of the bul

Finding excess reactant

If 23.96 kg of iron(III) oxide are combined with 11200 dm3 of carbon monoxide at STP, which substance would be the excess reactant--iron oxide, carbon monoxide, iron, carbon dioxide

Calculation using gas law

Given 20g potassium chlorate, how many cubic decimeters of oxygen would be produced at STP 2 KCLO3----> 2 KCL(cr) + 3O2(g)

Vapor pressure, compressibility factor, combustion

This is a review for old material that am unfamiliar with ... thanks for your help! When 8.21L of C4H10(g) (butane) are burned in oxygen, how many liters of O2(g) are consumed? Both gases are held at 324.5 K and 12.23 atm. ans: 53.37 ------------------------- Pure Acetone (CH3COCH3) has a vapor pressure of 324.0 torr

Maxwell distribution

Plot the Maxwell distributions for CO2, N2, and He at 298K in the velocity range of 0 to 2500 m/s. Label each curve appropriately. What temp. would you have to change the CO2 to cause it to have the same mean velocity as the He at 298K? What fraction of the N2 molecules are in the velocity range 500 to 1000 m/s? What is th

Volume and Pressure

1. What is the volume of a quantity of a gas at 172 Celcius, if its volume is 262 mL at -25 Celsius and the pressure remains constant. 2. What is the pressure, in inches of mercury, of a gas that originally had a volume of 252 mL, under a pressure of 0.834 atmosphere and a temperature of 45 Celsius if the volume is reduced to

Pressure and Volume using Boyle's Law

A sample of nitrogen has a volume of 50 L at a pressure of 760. mmHg. What is the volume of the gas at each of the following pressures if there is no temperature change. A. 1500 mmHg (I have solves the problem for A!) B. 2.0 atm. C. .500 atm According to my text book, the answers for P3 and P4, are 25 L and 100.

General Chemistry: Gas Laws

A 36.4 liter volume of methane gas is heated from 25 °C to 88 °C at constant pressure. What is the final volume of the gas?

Volume of an Ideal Gas

What is the volume of 0.5 moles of an ideal gas at a pressure of 1.5 atm and a temperature of 5.0 degrees C?

Gas mixtures and movements

The following reaction takes place in a sealed 40.0-L container at a temp of 120 degrees C 4NH 3(G) + 5 O2 (g) --> 4NO (g) + 6H2O (G) a) When 34.0g of NH3 reacts with 96.0g of O2 what is the partial pressure of NO in the sealed container? b) What is the total pressure in the container?

Ideal Gas Law and Hydrogen

A 2.02 gram sample of Al reacts with excess Hcl(aq) and the hydrogen produced is collected over the aqueous solution at 24 degrees Celsius. What is the total volume of hydrogen collected at barometric pressure of 760.000 Torr? (Include VP) Assume VP of the solution is the same as the VP of pure water. 2 moles Al(s) + 6 mol

Ideal Gas Law and Aqueous Hydrogen Peroxide

A 100.0 gram sample of aqueous hydrogen peroxide decomposes over time to make 3.31 L of O2(g) at 21 degrees Celsius and 715 Torr. What must the mass percentage of H2O2 is the solution? (Ignore the VP of H2O). 2 moles of H2O2 -----> 2 moles of H2O(l) + O2(g)

Grand Canonical Partition Function

For the grand canonical ensemble we've obtained two expressions for the pressure: P = (k_B)(T)/Vln(x) or P = (k_B)(T)(dln(x))/dV_Bu,B where is the grand canonical partition function. Check that the derivative does not give the first expression exactly. Nonetheless, the pressure calculated in the two ways agree - at least

Equilibrium and Reactions

Question 1 At 100oC, the equilibrium constant, KC, for the reaction COCl2(g) ?---? CO(g) + Cl2(g) has a value of 2.19 x 10-10. Is the following mixture at equilibrium? If not, indicate the direction in which the reaction must proceed to achieve equilibrium. [COCl2] = 5.00 x 10-2 M, [CO] = [Cl2] = 3.31 x 10-6 M Question 2

Hydrogen Gas Problem Using the Ideal Gas Law

Consider a vehicle powered by hydrogen gas. a. About 3.1 kg of H2 is required for a vehicle to have a 500 km range. Assume ideal gas behavior and a storage tank of 60 L (a comparable size to conventional gasoline vehicles). What tank pressure atm might one expect at 25 degrees celsius? b. Since their discovery in 1991, tin

Partial Pressure of Products and Reactants

A 10.0 L tank contains nitrogen gas and chlorine gas at partial pressure of 1.00 atm each, at a temperature of 300K. The mixture is allowed to react, producing nitrogen trichloride. Calculate the partial pressures of the products and reactants.