A) 2 kJ
B) 8 kJ
C) 3.5 kJ
D) 5.5 kJ
Correct Answer: B
Solution :
[b] According to first law of thermodynamics \[Q=\Delta U+W\] Given: \[Q=2kcal=\text{ }2000\times 4.2=8400J\] \[W=400J\] \[\Delta U=Q-W=8400-400=8000J\]You need to login to perform this action.
You will be redirected in
3 sec