1. A cylinder with a moveable piston contains 0.79 mol of gas and has a volume of 333 mL. What will its volume be if an additional 0.29 mol of gas is added to the cylinder? (Assume constant temperature and pressure.) Express your answer using two significant figures.
2. A weather balloon is inflated to a volume of 25.4 L at a pressure of 740 mmHg and a temperature of 23.6 °C. The balloon rises in the atmosphere to an altitude, where the pressure is 375 mmHg and the temperature is -13.2 °C (Assuming the balloon can freely expand, calculate the volume of the balloon at this altitude)
3. A sample of nitrogen gas in a 1.60-L container exerts a pressure of 1.52 atm at 26 °C What is the pressure if the volume of the container is maintained constant and the temperature is raised to 324 °C?
4. A sample of gas has a mass of 0.550 g. Its volume is 116 mL at a temperature of 83 C and a pressure of 742 mmHg (Find the molar mass of the gas.)