# How much heat is lost from a block of solid gold when 2000 g of this gold (Au) cools from 1064 degrees C to 25 degrees C? (Cp(Au) = 0.128 J/g*degC)

I got $265 , 984 J$ lost by our gold.
Here I would use the general expression of heat $Q$ exchanged by a mass $m$ to go from an initial temperature ${T}_{i}$ to a final temperature ${T}_{f}$:
$Q = m {c}_{p} \left({T}_{f} - {T}_{i}\right)$
$Q = 2000 \cdot 0.128 \left(25 - 1064\right) = - 265 , 984 J$