With chemistry !

1. a sample of gas takes up 45l. after being compressed down to a volume of 12l, the sample has a pressure of 5.7 atm. what was the original pressure?

2. a balloon takes up 32l of volume at 20˚c and a pressure of 212kpa. at what temperature will the balloon have a volume of 50l and a pressure of 300kpa?

3. at a temperature of 65˚c and a pressure of 1120mmhg, a large balloon takes up 25l. what will the volume become if the temperature is lowered to 5˚c?

4. at a temperature of 45˚c and a pressure of 250kpa, how many moles will fill a container that is 16l in volume?

5. a sample of gas in a rigid 20l container has a pressure of 2200mmhg and it is placed outside in the morning when the temperature is cold. throughout the day it warms up, and by the afternoon the temperature reaches 39˚c and the pressure inside the container is 2700mmhg. what was the temperature in the morning?