Question: 12. The work done to compress a gas is 50 J. As a result, 20 J of heat is given off to the surroundings.

12. The work done to compress a gas is 50 J. As

12. The work done to compress a gas is 50 J. As a result, 20 J of heat is given off to the surroundings. Calculate the change in energy of the gas. * (3.5 Points) O +30 J O +20 J +40 J +70 J -70 J

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