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Question: The temperature of 5 moles of a gas which was held at constant volume was changed from 100<sup>0</su...

The temperature of 5 moles of a gas which was held at constant volume was changed from 1000C to 1200C. The change in internal energy was found to be 80 Joules. The total heat capacity of the gas at constant volume will be equal to –

A

8 J/K

B

0.8 J/K

C

4.0 J/K

D

0.4 J/K

Answer

4.0 J/K

Explanation

Solution

(DQ)v = nCvDT = heat capacity DT

Heat capacity = ΔUΔT=4JK\frac{\Delta U}{\Delta T} = \frac{4J}{K}