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0.08 kg air is heated at constant volume through 5°C. The specific heat of air at constant volume is 0.17 kcal/kg°C and J = 4.18 joule/cal. The change in its internal energy is approximately.

1. 284 J
2. 298 J
3. 318 J
4. 142 J

Correct answer: 284 J

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