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## Homework Statement

A 200.0 g aluminum calorimeter holds 300g of water at 75 C. 20 g of ice at 0 C are added to the water. What is the final temperature of the mixture?

## Homework Equations

Use Lf= 33.5 x 10

^{4}

Cal= 900 J/kg C

The answer is 66.5 C

## The Attempt at a Solution

Don't know where to start.