Q. A system absorb $600 J$ of heat and work equivalent to $300 J$ on its surroundings. The change in internal energy is

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A

300 J

54%

B

400 J

22%

C

500 J

8%

D

600 J

16%

Solution:

$Δ E = Q + W = 600 + (- 300) = 300 J$