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Two moles of ideal helium gas are in a r...

Two moles of ideal helium gas are in a rubber balloon at `30^@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^@C.` The amount of heat required in raising the temperature is nearly (take R
`=8.31 J//mol.K`)

A

`62 J`

B

`104 J`

C

`124 J`

D

`208 J`

Text Solution

Verified by Experts

The correct Answer is:
D
For an isobaric process, `Q=nC_(P)DeltaT `
`=2((5)/(2)R)(5)=2xx(5)/(2)xx8.31xx5=208 J`
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