The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T1K to T2K is

As here volume of the gas remains constant, therefore the amount of heat energy required to raise the temperature of the gas is ΔQ=nCvΔTHere, Number of moles, n=14CV=32R        ∵  He  is  a  monatomic ΔT=T2−T1 ∴  ΔQ=1432RT2−T1 =38NakBT2−T1               ∵kB=RNa