Answer to Question #73924 in Physical Chemistry for saujan

Question

The ΔHvap of water is 40.7 kJ at 100 °C. How much liquid water in grams can be converted to vapor if 5950 J of heat are absorbed?

Answer 1

Solution
This problem can be solved by setting up a simple one-line conversion, the only extra information
used is that the molar mass of H2O is 18 g/mol:
5950 J (1 mol/40.7 kJ) (1 kJ/1000 J) (18 g H2O/1 mol H2O) = 2.63 g.
Answer: 2.63 g.