17. The specific heat at constant volume for the monoatomic argon is 0.075 kcal/kg-K, whereas its gram molecular specific heat

C_v = 2.98 cal/mole/K. The mass of the argon atom is

(a) 6.60×10^-23 gm                            (b) 3.30×10^-23 gm

(c) 2.20×10^-23 gm                           (d) 13.20×10^-23 gm

(Avogadro’s number=6.02×10²³ molecules/moles)

Answer-a