A cylinder with fixed capacity of 67.2 lit contains helium gas at STP. The amount of heat needed to raise the temperature of the gas by 20^ Cis: Given that R=8.31J mol^-1K^-1 ]

Question

Accepted Answer

Correct answer: C. (c) JEE Main 2019 As the process is isochoric so, Q= nc_v T= 67.222.4 3R2 20=90R=90 8.31 ≃748j

$A cylinder with fixed capacity of 67.2 lit contains helium gas at STP . The amount of heat needed to raise the temperature of the gas by 20^{\circ} C is: Given that R = 8.31 J mol^{- 1} K^{- 1}]$

Solution

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