# How much heat energy must be absorbed to completely melt 35.0 grams of H_2O(s) at 0°C?

Jun 4, 2018

$11690$ joules

#### Explanation:

Here, we melt the piece of ice, so we use the latent heat of fusion. The equation is thus:

$q = m {L}_{f}$

where:

• $q$ is the heat energy supplied in joules

• $m$ is the mass of the substance

• ${L}_{f}$ is the latent heat of fusion of the substance

So here, we get:

$q = 35 \textcolor{red}{\cancel{\textcolor{b l a c k}{\text{g"*(334 \ "J")/(color(red)cancelcolor(black)"g")=11690 \ "J}}}}$