At `27^@C` two moles of an ideal monatomic gas occupy a volume V. The gas expands adiabatically to a volume `2V`. Calculate (a)

At `27^@C` two moles of an ideal monatomic gas occupy a volume V. The gas expands adiabatically to a volume `2V`. Calculate
(a) final temperature of the gas
(b) change in its internal energy and
(c) the work done by the gas during the process. [ `R=8.31J//mol-K`]
A. `(a)195K" "(b)2.7kJ`
B. `(a)189K" "(b)2.7kJ`
C. `(a)195K" "(b)-2.7kJ`
D. `(a)189K" "(b)-2.7kJ`

At `27^@C` two moles of an ideal monatomic gas occupy a volume V. The gas expands adiabatically to a volume `2V`. Calculate (a) final temperature of t

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