Three Moles of an Ideal Gas with a Molar Heat

question 95

Multiple Choice

Three moles of an ideal gas with a molar heat capacity at constant volume of 4.9 cal/(mol∙K) and a molar heat capacity at constant pressure of 6.9 cal/(mol∙K) starts at 300 K and is heated at constant pressure to 320 K, then cooled at constant volume to its original temperature. How much heat flows into the gas during this two-step process?

• A)710 cal
• B)-720 cal
• C)0 cal
• D)120 cal
• E)-120 cal

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