assignsubmission_file_WA6_CHE-121-jun16 (2) - Name College ID Thomas Edison State University General Chemistry I with Labs(CHE-121 Section no OL121

assignsubmission_file_WA6_CHE-121-jun16 (2) - Name College...

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Name: 1. A gas occupying a volume of 725 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume? (5 points) (Reference: Chang 5.19) V2 = 725 mL x0.970 atm / 0.541 atm =1299.91 mL sig. fig. error -1 2. The volume of a gas is 5.80 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.65 L? (The temperature remains constant.) (5 points) (Reference: Chang 5.21) P1V1=P2V2 1x 5.80 L = P2 x 9.65 L 5.80 / 9.65 = P2 P2 = .601 .601 x 760 = 456.788mmHg sig. fig. error -1 3.Why is the density of a gas much lower than that of a liquid or solid under atmospheric conditions? What units are normally used to express the density of gases? (5 points)
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