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Two moles of an ideal monatomic gas occu...

Two moles of an ideal monatomic gas occupies a volume V at 27 °C. The gas expands adiabatically to a volume 2V. Calculate (i) the final temperature of the gas and (ii) change in its internal energy.

A

`(1) 195 K (2) 2.7 kJ`

B

`(1) 189 K (2) 2.7 kJ`

C

`(1) 195 K (2) –2.7 kJ`

D

`(1) 189 K (2) –2.7 kJ`

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The correct Answer is:
D
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