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 (15)