The rate of effusion of oxygen gas to that of an unknown gas is 1.12. What is the other gas?

A high-altitude balloon contains 15.7 L of helium gas at 101.3 kPa. What is the volume when the balloon rises to an altitude where the pressure is only 15.0 kPa? (Assume there is no change in temperature.)

The average molecular speed in a sample of Xe gas at a certain temperature is 236 m/s. The average molecular speed in a sample of AR gas is  ?? m/s at the same temperature.

Ammonia is synthesized from nitrogen gas and hydrogen gas at 400 degrees Celsius and 350 kPa.  If 30.5L of nitrogen gas react with excess hydrogen what volume of ammonia will be produced if the products are stored at SATP? 10.2L   61.0L   15.3L   93.3L

carbon dioxide diffuses at a rate of .653 m/s. if an unknown gas diffuses at a rate of .479 m/s at the same temperature what is the molar mass of the unknown gas

A 1.69 mol sample of He gas is confined in a 42.0 liter container at 29.5 °C. If 1.69 mol of Xe is substituted for the 1.69 mol of He, holding the volume and temperature constant, the average molecular speed will decrease remain the same not enough information to answer the question O increase

750.0mL of gas at 0.395atm of pressure and at 50.00C is heated until the volume of gas is 2000.0mL and the pressure is 0.921atm.

Calculate the final pressure required to increase the volume of a 5 L sample of gas initially at 1 atm i) by 7 L ii) to 7L

The rate of effusion of a particular gas was measured and found to be 26.9 mL/min. Under the same conditions, the rate of effusion of pure methane () gas is 47.8 mL/min. What is the molar mass of the unknown gas?

What is the total volume of gas formed from the decomposition of 65.7 g of sodium bicarbonate at 2.65 atm and 600 C. The decomposition reaction of sodium bicarbonate forms carbon dioxide, water, and sodium oxide.