Half mole of an ideal monoatomic gas is ...

Half mole of an ideal monoatomic gas is heated at constant pressure of 1 atm from `20^(@)C " to " 90^(@)C`. Work done by gas is close to: (Gas constant R = 8.31 J/mol-K)

A

`581 J`

B

`291 J`

C

`73 J`

D

`146 J`

Verified by Experts

The correct Answer is:

B

`W= int PdV=nR triangleT= (1)/(2)xx8.310xx70=291J`.

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