Help with these please

5 pts D Question 1 An oxygen cylinder used for breathing has a volume of 6 L at 85 atm pressure. What volume would the same amount of oxygen have at the same temperature if the pressure were 1 atm? D Question 2 JULS A sample of hydrogen gas at 273 K has a volume of 2 L at 9 atm pressure. What is its pressure if its volume is changed to 7 L at the same temperature. D Question 3 5 pts An average adult inhales a volume of 0.6 L of air with each breath. If the air is warmed from room temperature (20C = 293 K) to body temperature (370C = 310 K) while in the lungs, what is the volume of the air when exhaled? Provide the answer in 2 decimal places. Question 4 5 pt What would the inside pressure become if an aerosol can with an initial pressure of 4.8 atm were heated in a fire from room temperature (20C) to 600C? Provide the answer in 2 decimal places. D Question 5 5 pts The air pressure outside a jet airliner flying at 35,000 ft is about 203 mm Hg. How many pounds per square inch (or psi) is this? Provide the answer in 2 decimal places. Driving on a hot day causes tire pressure to rise. What is the pressure inside an automobile tire at 450C if the tire has a pressure of 29 psi at 150C? Assume that the volume and amount of air in the tire remain constant. D Question 7 5 pts Driving on a hot day causes tire pressure to rise. What is the pressure inside an automobile tire at 450C if the tire has a pressure of 29 psi at 150C? Assume that the volume and amount of air in the tire remain constant. Question 8 5 pts A weather balloon is filled with helium to a volume of 250 L at 22C and 745 mm Hg. The balloon ascends to an altitude where the pressure is 570 mm Hg, and the temperature is -640C. What is the volume of the balloon at this altitude? (Hint: According to the combined gas law, PV/T = Constant or P1V1/T1 = P2V2/T2)