Molar heat capacity for an ideal gas at constant pressure is . Change in internal energy is 5000 J upon heating it from 300 K to 500 K. Number of moles of gas at constant volume is .

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Question

Molar heat capacity for an ideal gas at constant pressure is . Change in internal energy is 5000 J upon heating it from 300 K to 500 K. Number of moles of gas at constant volume is .

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Canvas Classes · Accepted Answer

Strategy:
 Use the definitions of molar heat capacity () and the relationship .

Step 1: Find Molar Heat Capacity at Constant Volume ()
Mayer's relation: 
.

Step 2: Solve for number of moles ()

.

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