A 149 g block of ice at a temperature of -20.5oC absorbs 12.7 kcal of heat. What is the final phase of the substance?

Answer 1

heat energy absorbed by a substance is ...
... mass * specific heat * temperature change

for a phase change ... melting/freezing , boiling/condensing
... mass * phase change energy

the steps for this solution
...heat ice to melting point ... mass * s.h. * Δt
... melt ice ... mass * heat of fusion
... heat water ... mass * s.h. * Δt

sum the individual heats
... must be equal to 12.7 kcal