Need help determining the correct equation

[katiemager]

Homework Statement

How much ice in grams would have to melt to lower the temperature of 52.4 g of water from 50.0 ∘C to 0 ∘C? (Assume that the density of water is 1.0 g/mL.)

Relevant Equations

q=mc(change in T)

I thought it would be...
q=mc(change in T)
=52.4g(1.0C/gC)(50C)
= 2620 g

This is incorrect. Am I using the right equation?

 

[mfb]

Your value of c is wrong. Fix it and you get the heat in J the ice has to absorb. That is not the amount of ice you need.

 

[Borek]

Solving problems is NOT about "using a correct equation". It is about understanding the problem and describing it mathematically.

There are two separate thing happening here: one is cooling water - how much heat does it give away?
Second is melting ice - how much ice will the heat given away by water melt?