How much energy is required to melt 500g of water?

Answer 1

We need to know the ∆Hfusion of H2O, which I find to be 334 J/g

q = m∆Hfusion

q = heat = ?

m = mass = 500 g

∆Hfusion = heat of fusion = 334 J/g

q = (500 g)(334 J/g) = 167,000 J = 167 kJ