Question

Heat of 30 kcal is supplied to a system and 4200 J of external work is done on the system so that its volume decreases at constant pressure.What is change in its internal energy?

@Shristi

Sorry ab kr rha hu na baat

aur bata kaisi hai ???​

Answer 1

Answer:

For that, we multiply the heat given in cal with 4200. The heat supplied to a system is denoted as ΔQ. The work done on the system is such that the volume of the system is decreasing. So the work done on the system is negative.