- #1
chawki
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Homework Statement
Hot water is mixed with an amount of ice having an equal mass to that of the water
and an initial temperature of 0 °C. The specific heat capacity of
water is 4.2 kJ/(kg K) and the specific latent heat of fusion for ice is 334 kJ/kg. Assume that no
heat is lost to the surroundings.
Homework Equations
What should the initial temperature of the hot water be to achieve a final water temperature of 5 °C with all the ice melted?
The Attempt at a Solution
Q=m*Hf
Q=m*Cp*delta T
m*334 = m*4.2*(5-T)
(5-T) = 334/4.2
T = -74 C (i'm very probably wrong )