The internal energy change (in J) when 90 g of water undergoes complete evaporation at 100°C is (given: ΔHvap for water at 373 K = 41 kJ/mol, R = 8.314 J K⁻¹ mol⁻¹).
a) 189.36 J
b) 165.24 J
c) 145.98 J
d) 110.44 J