Q 11-11-021NEETJEE MainMedium
Two moles of a monatomic ideal gas are heated at constant pressure from $300$ K to $400$ K. The heat supplied is ($R = 8.3$ J/mol K)
Answer: (D) $4150$ J
Concept. Isobaric heat: $Q = nC_P\Delta T$ with $C_P = \dfrac52R$ for a monatomic gas.
Step 1. Substitute. $2 \times 2.5 \times 8.3 \times 100 = 4150$ J.
Answer. $4150$ J (Option D).
Solution by Sreeraj P, M.Sc Physics