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Problem 20.65 As part of a physics experiment, air under high pressure is allowed to expand isentropically out of a metal can and into an empty plastic bag. When the expansion is complete, the bag and contents are at atmospheric pressure. The air inside the can is initially at 6.0 atm and 15 °C. Part A What is the air's temperature once it is in the plastic bag? T = Submit ΑΣΦ Provide Feedback Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining ?
Problem 20.37 In a cylindrical chamber fitted with a piston, the piston compresses 10.0 mol of ideal gas from 1.00 m³ to 0.100 m³ at a constant temperature of 300 K. Suppose this compression was done by placing a 200-kg block on top of the piston. Assume the air pressure outside the piston is 1.00 atm, and ignore the piston mass. Part A What is the piston radius? Express your answer to two significant figures and include the appropriate units. R = Submit Value Units Provide Feedback M Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining
Problem 20.34 Part A If 1.00 mol of an ideal monatomic gas initially at 68 K absorbs 100 J of thermal energy, what is the final temperature? Assume the volume does not change. Tf = Submit Provide Feedback V ΑΣΦ Request Answer ? K