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Best in 7 days The internal energy change (in J) when 90 g of water undergoes complete evaporation at `100^(@)C ` is ______ . (Given : `Delta H_("vap")` for water at 373 K = 41 kJ/ mol , `R = 8.314 JK^(-1) mol^(-1)`) US$ 23.35 Sold : Login>>
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