1. What is the pressure in a 14.0-L cylinder filled with 0.450 mol of nitrogen gas at a temperature of 315 K?
2. Assuming that all of the carbon dioxide ends up in the balloon, what is the volume of the balloon at 23 C and a pressure of 748 mmHg?
3. What is the density (in g/L) of hydrogen gas at 20.0 C and a pressure of 1660 psi?