The molar specific heat of oxygen at constant pressure Cp = 7.03 cal/moloC and R = 8.31 J/moloC. The amount of heat taken by 5 mol of oxygen when heated at constant volume from 10oC to 20oC will be approximately :
Answer & explanation
Correct answer: option 3
\(Q = n C_V \Delta T = n(C_P - R)\Delta T\)
= \(5 (7.03 - \frac{8.31}{4.2}) (20 - 10)\)
= 250 cal