Heat And Thermodynamics

The velocity of sound in a gas is \(1300 \mathrm{~m} / \mathrm{s}\) at STP and specific heat at constant pressure is \(6.84 \mathrm{~cal} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\). The rms velocity at STP is \((R=1.98 \mathrm{~cal} \mathrm{~K}^{-1} \mathrm{~mol}^{-1})\)