A sample of 2 kg monoatomic helium gas (assumed ideal) is taken through the process ABC and another sample of 2 kg of the same gas is taken through the process ADC. Given that the molecular mass of helium = 4 amu, find the temperature of helium in the state D. [Take the universal gas constant 
]
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(240)
Number of gram moles of He, 
V A = 10m 3 , p A = 5 x 10 4 N/m 2
Similarly, V B = 10m 3 , p B = 10 x 10 4 N/m 2 
Similarly, V c = 20 m
3 , p c = 10 x 10 4 N/m 2
Similarly, V D = 20 m 3 , p D = 5x 10 4 N/m 2
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