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In a process, the system performs 142J o...

In a process, the system performs 142J of work and the internal energy of the system increases by 879 J. predict the direction of heat flow and also calculate the quantity of heat transferred.

Text Solution

Verified by Experts

Given, `w=-142J and DeltaU=+879J`
`therefore DeltaU=q+w or, 879=q-142" "therefore q=+1021J`
The positive value of q indicates that the system absorbs heat from the surroundings i.e., heat flows from the surroundings to the system. Amount of heat transferred in the process is 1021J.
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