JEE Main 20202 Sep, Morning shiftChemistryMediumChemical Thermodynamics84× since 2002
The internal energy change (in J) When 90 g of
water undergoes complete evaporation at
100^oC is ____________.
(Given : H_vap for water at 373 K = 41 kJ/mol,
R = 8.314 JK^–1 mol^–1)