A helium gas cylinder of the sort used to fill balloons has a volume of 220 LL and a pressure of 2200 psipsi (150 atmatm) at 25 ∘C∘C.

A gas cylinder contains (6.9600x10^1) L of the gas argon when it is full. If the cylinder was at an internal pressure of (1.6700x10^3) kPa and (2.72x10^1) °C, how many molecules of argon gas were present in the container? Give your answer with TWo decimals. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer units

A 7.00 L tank at 14.7 degree celsius is filled with 8.08 g of sulfur hexafluoride gas and 8.57 g of dinitrogen difluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the partial pressure of each gas in the tank. Be sure your answers have the correct number of significant digits.

A 10.0 gg sample of krypton has a temperature of 25∘C∘C at 567 mmHgmmHg. What is the volume, in milliliters, of the krypton gas?   Express your answer to three significant figures and include the appropriate units.

For many purposes we can treat ammonia NH3 as an ideal gas at temperatures above its boiling point of −33.°C. Suppose the temperature of a sample of ammonia gas is lowered from 23.0°C⁢ to −19.0°C, and at the same time the pressure is changed. If the initial pressure was 6.3atm and the volume increased by 55.0%, what is the final pressure? Round your answer to the correct number of significant digits.

The volume of an automobile tire is 2.5 × 10−2m3 . the pressure of the air in the tire is  2.7 atm and the temperature is 11C ◦ . what is is the mass of air in grams ? The mean molecular mass of air is 29g.                                     1 atm = 1.01  × 105 Pa ;    Calculate to 2 decimals.

Suppose you want to calculate the number of moles of a gas released from a chemical reaction based on the ideal gas law equation. In the lab, you observe that 19.1 mL19.1 mL of gas are released at a temperature of 26.7∘C26.7∘C and a pressure of 9.20×102 Torr.9.20×102 Torr. You begin calculations using the value for ?R as 0.08206 L⋅atmmol⋅K.0.08206 L⋅atmmol⋅K. Next, convert the remaining values to units suitable for use in this equation.   V=____L T=____K P=____atm

A cylinder is filled with 10.0L of gas and a piston is put into it. The initial pressure of the gas is measured to be 281.kPa . The piston is now pushed down, compressing the gas, until the gas has a final volume of 1.90L . Calculate the final pressure of the gas. Be sure your answer has the correct number of significant digits.

A piece of dry ice (solid carbon dioxide) with a mass of 25.5 g sublimes (converts from solid to gas) into a large balloon. Assuming that all of the carbon dioxide ends up in the balloon, what is the volume of the balloon at 27 ∘C and a pressure of 735 mmHg ? Express your answer to three significant figures.

A homeowner uses 4.00x10³ m³ of natural gas in a year to heat a home. Assume the gas is CH4 and that it behaves as a perfect gas. If the pressure is 1.00 atm and the temperature is 20.0°C, what is the mass of the gas used?