How much heat is required to change 10 g of ice at 0o deg C to steam at 100 deg. C?

Answer 1

q1 = heat to melt the ice at zero C.
q1 = mass ice x H fusion.

q2 = heat to move T from zero C to 100 C.
q2 = mass water x specific heat water x delta T.

q3 = heat to turn water into steam at 100 C.
q3 = mass water x H vaporization.

Answer 2

Total Q = q1 + q2 + q3