The internal energy change (in J ) when 90 {g} ofwater undergoes complete evaporation at 100^\circ{C}is ____. (Given: \\Delta{H}_{ {\vap }} for water at 373 {K}=41 {kJ} \/ {\mol} {R}=8.314 {JK}^{-1} {\mol}^{-1} ) [2 Sep 2020 Shift 1]

Chemical Thermodynamics Part 1

Section: Chemistry

Question : 22 of 100

Marks: +1, -0

The internal energy change (in J ) when 90 g ofwater undergoes complete evaporation at 100°Cis ____.
(Given: ΔHvap for water at 373K=41 kJ∕ ‌mol R=8.314JK−1 mol−1)

[2 Sep 2020 Shift 1]

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