# How much energy will it take to melt 100 grams of ice at 0◦C?

Jan 29, 2015

The answer is: $33.4 k J$

To answer to this question it is sufficient to use this equation:

$Q = L m$

where

$Q$ is the amount of heat needed to melt the ice (the request of the problem;

$L$ or ${L}_{i c e}$ is the Latent Heat of melt for ice, that is:

L_(ice)=3.34 · 10^5 J/(kg);

$m$ is the mass of ice that is to melt, that is:

$m = 100 g = 0.1 k g$.

So:

Q=3.34 · 10^5 J/(kg).0,1kg=33,400J=33.4kJ