If R = universal gas constant, the amount of heat needed to raise the temperature of 4 mol of an ideal monoatomic gas from 273 K to 373 K when no work is done is :

100 R 600 R 300 R 500 R

600 R

\(\Delta Q = \Delta U\)   = \(\mu C_v \Delta T = \mu [\frac{R}{\gamma - 1}] \Delta T\)   = 4 x \(\frac{R}{\frac{5}{3}-1} [373-273]\)   = 600 R