Question

To calculate the heat needed to melt a block of ice at its melting point what do you need to know?

Answer 1

Answer:

D.The mass and the latent heat of fusion.

Explanation:

As per the definition of latent heat of fusion we know that it is defined as the heat required to melt a given substance completely when the given substance is at its melting point point.

So here we can say that latent heat of fusion is given as

$L_f = \frac{Q}{m}$

now if the heat is required to melt the given substance when it is at its melting point then it is given as

$Q = mL_f$

so here correct answer is given as

D.The mass and the latent heat of fusion.

Answer 2

Answer:

Explanation:

You are not raising the temperature of the block of ice. You are making it turn phase.

H = m * hf

That's the mass of the block and the latent heat of fusion.

D.