Question

If 5.40 kcal of heat is added to 1.00 kg of water at 100 degrees celsius, how much steam at 100 degrees celsius is produced?

Answer 1

It takes 540 cal to vaporize 1 grams H2O at 100 C to steam at 100 C.
540 cal/g x #g = 540,000 cal.
Solve for #g.