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A system is given 300 calories of heat a...

A system is given 300 calories of heat and it does 600 joules of work. How much does the internal energy of the system change in this process (j=4.18joules/cal)

A

`654`joule

B

`156.5`joule

C

`-300`joule

D

`-528.2`joule

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The correct Answer is:
A
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