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What is the change in enthalapy (kcal) w...

What is the change in enthalapy (kcal) when 1 mole of ideal monoatomic gas is expended reversibly and adibatically from initial volume of 1 L and initial temperature 300 K to final volume of 8 L :

A

`-1.125`

B

`+1.125`

C

2.25

D

`-2.250`

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A
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