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## Homework Statement

A 105.05 g ice cube at -15°C is placed in an aluminum cup whose initial temperature is 73°C. The system comes to an equilibrium temperature of 24°C. What is the mass of the cup?

## Homework Equations

Q=mc (delta T)

## The Attempt at a Solution

the sum of total heat in the system is equal to zero.

Qice+Qaluminium cup=0

MiceCice(delta T)+MaluminiumCaluminium(delta T)=0

I solved for mass of aluminium cup, and got 0.1951 kg. But, it is wrong.

Please help.