A system absorbs 600 J of heat and does work equivalent to 900 J by expanding The change in - Chemistry - Solutions

Question

A system absorbs 600 J of heat and does work equivalent to 900 J by
expanding The change in internal energy for the system is-: a) -300
J b) +300J c) -600 J d) +600 J

Goutam Pradhan · Accepted Answer

Solution:Heat absorbed by the system (q)=+600JWork done due to expansion (w)= -900JFrom first law of thermodynamics∆U=q+w       =+600+(-900) J       = -300JOption A is correct

A system absorbs 600 J of heat and does work equivalent to 900 J by expanding .The change in internal energy for the system is-: a) -300 J b) +300J c) -600 J d) +600 J