How much water boils when 7.67 kg of molten lead is poured into water?

[al86]

Homework Statement

Suppose 7.67 kg of molten (liquid) lead at its melting point is poured into 764 g of water at 53.3o C. How much of the water boils?

Homework Equations

mc(detla T) = m(water)c(detla T).

The Attempt at a Solution

i m guessing i have to do the dollowing:
mc(detla T) = m(water)c(detla T)+m(vapor)Lv
am i on the right track..
thanks in advance

 

[turin]

describe the physical change that occurs in the lead.