If I have a 3.2 L sample of gas initially at STP, what is the final volume if the conditions are changed to 280K and 1.5 atm?

If I have a 5.7 L sample of gas at a pressure of 6 atm and a temperature of 186K and the pressure is changed to 0.7 atm and the final volume is 4.2 L, what is the final temperature

A 2.4 L sample is cooled from 327 K to 253 K. What is the final volume?

A sample of gas has a volume 3.7 L when at a pressure of 105 kPa. To what would the pressure need to be increased for the volume to decrease to 2.3 L?