Question

Assuming that helium heats upon expansion, sketch a plot of ΔT versus Δp for this gas.

Answer 1

T=0 deg.c, P= 1atm, V= 22.4 m3 , density = 4/22.4 kg/m3 =0.178 kg/m3( 1 kg mole of any gas at STP occpies 22.4 m3)

T= 5 deg.c. P=1 atm V= 22.4*278.15/ 273.15)= 22.81 density = 4/22.81 Kg/m3=0.175 kg/m3

change in density = (0.178-0.175)= 0.003 kg/m3. The plot is shown below