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# HW20Sol - Jim Guinns PHYS2211 Assignment#20 Solutions These...

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Jim Guinn’s PHYS2211 Assignment #20 Solutions These problems are not to be turned in. They are for you to study for the exam. 1. An enclosed sample of ideal gas undergoes an isothermal (constant temperature) process. Its initial volume is 3.00m 3 and its final volume is 5.50m 3 . What is its final pressure if its initial pressure is 1.25atm? For a sample of ideal gas undergoing an isothermal process, we know that "n" is held constant, and "T" is held constant, with PV = nRT we have P V = n R T = constant, so P i V i = P f V f , so P f = P i V i / V f = (1.25atm) (3.00m 3 ) / (5.50m 3 ) = P f = 0.682atm = 6.91x10 4 Pa . 2. An enclosed sample of ideal gas undergoes an isobaric (constant pressure) process. Its initial temperature is 17.0 o C and its final temperature is 77.0 o C. What is its final volume if its initial volume is 1.75m 3 ? For a sample of ideal gas undergoing an isobaric process, we know that "n" is held constant, and "P" is held constant, with PV = nRT we have V / T = n R / P = constant, so

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HW20Sol - Jim Guinns PHYS2211 Assignment#20 Solutions These...

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