help with any of these problems. Plz xplain if you can thx

What would the volume of gas contained in an expandable 1.0 L cylinder at 15 MPa (1MPa = 10^6 Pa) be at 1 atm (assuming constant temperature)?

A sample tube containing 103.6 mL of CO gas at 20.6 torr is connected to an evacuated 1.13 liter flask. (The new volume is the sum of those of the tube and flask.) What will the pressure be when the CO is allowed into the flask?

If a 16.6 L sample of gas contains 9.2 moles of F2, how many moles of gas would there be in a 750 mL sample at the same temperature and pressure?

An 11.2 L sample of gas is determined to contain 0.50 moles N2. At the same temperature and pressure how many moles of gas would there be in a 20. L sample?