1cm^3 of water at its boiling point absorbs 540 calories of heat to become steam with a volume of 1671cm^3.

popadaliikp

popadaliikp

Answered question

2023-02-13

1 c m 3 of water at its boiling point absorbs 540 calories of heat to become steam with a volume of 1671 c m 3 . If the atmospheric pressure is 1.013 × 10 5 N / m 2 and the mechanical equivalent of heat = 4.19 J/calorie, the energy spent in this process in overcoming intermolecular forces is
A) 540 calorie
B) 40 calorie
C) 500 calorie
D) Zero

Answer & Explanation

Jerimiah Short

Jerimiah Short

Beginner2023-02-14Added 6 answers

The correct answer is 500 calorie
Energy spent in overcoming inter molecular forces ΔU=ΔQ−ΔW
=ΔQ−P(V2−V1)=540−1.013×105(1671−1)×10−64.2≈500 calorie

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