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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)

73 J

(b)

291 J

(c)

581 J

(d)

146 J



Question ID - 50269 | SaraNextGen Top Answer

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)

73 J

(b)

291 J

(c)

581 J

(d)

146 J

1 Answer
127 votes
Answer Key / Explanation : (b) -

WD=PnRT=×8.31×70 = 291 J.

127 votes


127