37. One mole of an ideal monoatomic gas is heated at a constant pressure

of one atmosphere from  0⁰c to 100⁰c . Then the change in the internal energy is

(a)  6.56 joules                         (b) 8.32 x 10² joules

(c)  12.48 x 10² joules             (d)  20.80 joules

Ans. c