Help At 1 atm how much energy is required to heat 510 g of H

Help.

At 1 atm, how much energy is required to heat 51.0 g of H2O(s) at - 14.0 degree C H2O(g) at 137.0 degree C?

Solution

amount of heat required = mLf +m*s*(100)+m*Lv

=.051*( 334 +100 +2250)

=136.884 J