PLZ I need help really badly and really quickly 1)Suppose the temperature of 4.39 L of ideal gas drops from 381 K to 275 K.
(a) If the volume remains constant and the initial pressure is atmospheric pressure, find the final pressure.
Pa

(b) Find the number of moles of gas.
mol

2) An ideal gas at 24.9°C and a pressure 1.40 105 Pa is in a container having a volume of 1.00 L.
(a) Determine the number of moles of gas in the container.
mol

(b) The gas pushes against a piston, expanding to twice its original volume, while the pressure falls to atmospheric pressure. Find the final temperature.
K