What is the pressure in a 14.0-L cylinder filled with 0.450 mol of nitrogen gas at a temperature of 315 K ? Express your answer to three significant figures.

The gas in a 250. mL piston experiences a change in pressure from 1.00 atm to 2.75 atm. What is the new volume (in mL) assuming the moles of gas and temperature are held constant?

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 14.0 °C to -17.0 °C, and at the same time the pressure is changed. If the initial pressure was 1.5 atm and the volume decreased by 55.0%, what is the final pressure? Round your answer to the correct number of significant digits. atm a x10 X Ś

Three gases are mixed into one container.  The partial pressure of gas D is 820.1 mmHg.  The partial pressure of gas E is 217 mmHg.  The partial pressure of gas F is 445.3 mmHg.  Determine the total pressure of the gases in a different unit, atm.  Do not round until you have finished the problem. 1.00 atm = 760.0 mmHg Your answer should contain one decimal place.  Ex:  If your answer is 4.435, you would use 4.4 Include the correct units.