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The gas in a piston expands after receiving 30 kJ of heat. If there is no...

  1. The gas in a piston expands after receiving 30 kJ of heat. If there is no change in total internal energy, what is the amount of work done by the gas?

  2. The gas in a piston did 40 kJ of work while losing 3 kJ of heat to its surroundings. Find the change in total internal energy?

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Answer #1

soll from first law of thermodynamics 2 = A UHAW AQ=30kJ AU-O BOKJ=otaw work done done -30kJ 2 Now AW = 40RJ O Q = -3KJ CheatQ-AUA AUS A Q-aw = -3-40 L-43 kJ -43k] in internal energy Change -

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