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The temperature of 1 mole helium gas is ...

The temperature of `1` mole helium gas is increased by `1^@C`. Find the increase in internal energy.

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The correct Answer is:
3
`((DeltaE)/(DeltaT))_(V)=C_(V)`
`:. Delta E=C_(V) DeltaT`
`C_(V)=3/2 R` for monatomic gas
`DeltaT= 1K`
`:. DeltaE=3/2 R=3/2 xx2=3 cal`
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