Question

Find the change in internal energy in joule.
When 10g of air is heated from 30°C to 40°C
(Cv = 0.172 kcal/kg K, J = 4200 J/kcal).

( please explain with method )

1) 62.24 J

2) 72.24 J

3) 52.24 J

4) 82.24 J​

Answer 1

Answer:

Q= MCP(T2-T1)

cp/cv= 1.4

cp find cp m=10 gram= 0.01 kg

Explanation:

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