The value of a system that absorbs 12,4 J of heat and does 4,2 J of...

Question

Question

The value of a system that absorbs 12,4 J of heat and does 4,2 J of work on surrounding in

Answer 1

Answer #1

According to first law of thermodynamics:

dU=q+w

dU : change in internal energy

q: heat

w: work

Heat is absorbed by the system therefore for q is positive q=12.4J

Work is done by the system on the surroundings therefore work is is negative

w=-4.2J

Putting the values of of heat and work we can get the value of change in internal energy

dU = q+w

dU = 12.4J - 4.2J

dU = 8.2J

Answer 2

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