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Chap_5_HW_solutions

# Chap_5_HW_solutions - Chapter 5 homework solutions

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CHAPTER 5 HOMEWORK SOLUTIONS 28. A gauge on a compressed gas cylinder reads 2200 psi (pounds per square inch; 1 atm = 14.7 psi). Express this pressure in each of the following units. a. standard atmospheres b. megapascals (MPa) c. torr 38. Complete the following table for an ideal gas. P V n T a 7.74 x 10 3 Pa 12.2 mL 25 o C b 43.0 mL 0.421 mol 223 K c 455 torr 4.4 x 10 -2 mol 331 o C d 745 mm Hg 11.2 L 0.401 mol

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44. A bicycle tire is filled with air to a pressure of 100. psi at a temperature of 19 o C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 o C. The volume of the tire increases by 4.0 %. What is the new pressure of the bicycle tire? 46. A container is filled with an ideal gas to a pressure of 40.0 atm at 0 o C. a. What will be the pressure in the container if it is heated to 45 o C? b. At what temperature would the pressure be 1.50 x 10 2 atm? c. At what temperature would the pressure be 25.0 atm?
48. A compressed gas cylinder contains 1.00 x 10 3 g of argon gas. The pressure inside the cylinder is 2050. psi (pounds per square inch) at a temperature of 18 o C. How much gas remains in the cylinder if the pressure is decreased to 650. psi at a temperature of 26 o C?

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