When an ideal monoatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is

Step-by-step solution

By first law of thermodynamics Q=U+W aligned & = f 2 n R T+P d V= f 2 n R T+P V & or Q= f 2 n R T+n R T ( P V=n R T) aligned = 3 2 n R T+n R T= 5 2 n R T Fraction of heat energy supplied = U Q = (3 / 2) n R T (5 / 2) n R T = 3 5