Question: Question 2 1 pts 1 5 - 1 . The first law of thermodynamics states that the change D U in the internal energy of

Question 2
1 pts
15-1. The first law of thermodynamics states that the change DU in the internal energy of a system is given by DU=Q-W, where Q is the heat and W is the work. Both Q and W can be positive or negative numbers. Q is a positive number if q,, and W is a positive number if
the system gains heat; work is done by the system.
the system loses heat; work is done by the system.
the system loses heat; work is done on the system.
the system gains heat; work is done on the system.
Question 2 1 pts 1 5 - 1 . The first law of

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