Molar Specific Heats: A sample of ideal monatomic gas is cooled by 50.0 C° at constant volume by removing 831 J of energy from it. How many moles of gas are in the sample? (R = 8.31 J/mol ? K)
A. 2.50 mol
B. 1.50 mol
C. 1.33 mol
D. 1.00 mol
Answer: C
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