A quantity of ice at 0.0 degrees C was added to 33.6 of water at 21.0 degree C to give water at 0.0 degrees C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(g * degrees C)

Answer 1

Do you know that q = mass x specific heat x delta T?
And q = mass x heat fusion?
What do you not understand about how to use these equations?