JEE (Advanced) 2012 Paper-2 Question 8

Question 8

Two moles of ideal helium gas are in a rubber balloon at $$30^\circ C$$ .The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to $$35^\circ C$$.The amount of heat required in raising the temperature is nearly (take R = 8.31 J/mol.K)



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