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The internal energy change in a system t...

The internal energy change in a system that has absorbed `2 kcal` of heat and done `500J` of work is

A

8900 J

B

6400 J

C

5400 J

D

7900 J

Text Solution

Verified by Experts

The correct Answer is:
D
`Delta Q=Delta U+Delta W implies 2xx10^3 xx 4.2 = Delta U+500`
`implies Delta U=7900 J`
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