Quick question. Latent heat problem.

[new324]

Allright, I may sound stupid on this one.
How much heat (Q) is required to change 456 g of ice at -25(degrees celsius) into water at 25(degrees C). The Specific heat of ice is 2090 J/kg K, the specific heat of water is 4186 J/kg K. The latent heat of fusion of water is 33.5*10^4 J/kg.

Is this just going to be Qwater+Qice+Qlatent? Where Qlatent is m*L?

[cookiemonster]

Q = cm\Delta T

and

Q = mH_f

I think you have the right idea, but your notation is a little awkward.

cookiemonster

[new324]

Thanks cookiemonster. I appreciate the help.