.44 The compressed air tank of a scuba diver reads 3,200 psi atthe beginning of a dive and 825 psi at the end of a dive. Converteach of these values to atm and mmHg. 6.48 If someone takes abreath and the lungs expand from 4.5 L to 5.6 L in volume, and theinitial pressure was 756 mmHg, what is the pressure inside thelungs (in mmHg) before any additional air is pulled in? 6.52 Howhot must the air in a balloon be heated if initially it has avolume of 750. L at 20.oC and the final volume must be 1,000. L?6.56 If a plastic container at 1.0oC and 750. mmHg is heated in amicrowave oven to 80.oC, what is the pressure inside the container(in mmHg)? 6.58 Assuming a fixed amount of gas, complete thefollowing table:   P1 V1 T1 P2 V2 T2  a. 0.55 atm 1.1 L340 K ? 3.0 L 298 K  0.0oC b. 735 mmHg 1.2 L 298 K 1.1 atm ? ̶ 120oC c. 7.5 atm 230 mL 15 atm 0.45 L ? 6.62 Calculatethe volume of each substance at STP. a. 4.2 mol N2 b. 6.5 g He c.22.0 g CH4 6.64 What volume does 1.50  1024 molecules of CO2occupy at STP? 6.66 How many moles of gas are contained in acompressed air tank for scuba diving that has a volume of 7.0 L anda pressure of 210 atm at 25oC? 6.68 If a cylinder contains 10.0 gof CO2 in 10.0 L at 325 K, what is the pressure? 6.74 If thepressure due to the striped spheres in the molecular art is 480mmHg, what is the pressure due to the spotted spheres? What is thetotal pressure of the system? 
