If a system does 150 J of work on the surroundings and absorbs 100 J of heat, what is the change in internal energy?

Practice Questions

1 question
Q1
If a system does 150 J of work on the surroundings and absorbs 100 J of heat, what is the change in internal energy?
  1. -50 J
  2. 50 J
  3. 100 J
  4. 250 J

Questions & Step-by-step Solutions

1 item
Q
Q: If a system does 150 J of work on the surroundings and absorbs 100 J of heat, what is the change in internal energy?
Solution: Using the first law, ΔU = Q - W = 100 J - 150 J = -50 J.
Steps: 0

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