# How much heat is released when 88.2 g of water cools from 33.8°C to 12.9°C?

The specific heat of water is $4.186 \cdot J \cdot {g}^{-} 1 \cdot {K}^{-} 1$. This should have been quoted with the question.
Heat transferred $=$ DeltaTxxC_Pxx"mass
$=$ $- 20.9 \cdot K \times 88.2 \cdot g \times 4.186 \cdot J \cdot {g}^{-} 1 \cdot {K}^{-} 1$