How much heat is required to increase the temperature of 1.70 moles of an ideal monatomic gas by 23.0 K at constant pressure? (R = 8.31 J/mol ∙ K)
A)812 J
B)346 J
C)751 J
D)391 J
E)290 J

Question

Quizplus · Accepted Answer

The heat required at constant pressure is given by Q = nCpΔT, where Cp for a monatomic ideal gas is (5/2)R. Thus, Q = 1.70 moles * (5/2) * 8.31 J/mol∙K * 23.0 K = 812 J.

How Much Heat Is Required to Increase the Temperature of 1.70