Question

Calculate how much energy (in joules) is needed to change a 25.0 g sample of ice at 0.0°C to liquid water at 32.8°C.

Answer 1

q1 = heat to melt ice @ 0o C to liquid @ 0o C.

q1 = mass ice x heat fusion
q1 = 25.0 x look up heat fusion ice = ?
q2 = heat to change T of liquid water to T of 32.8 C
q2 = mass liquid water x specific heat H2O x (Tfinal-Tinitial)
q2 = 25.0 x look up specific heat H2O x (32.8 - 0) = ?
Qtotal = q1 + q2 = ?
Post your work if you get stuck.