How many energy is required to melt a 10g block of 0C ice to 0C water?

Latent heat of fusion of ice at 0°C
= 334 J/g

Energy required to melt a 10 g block of 0°C ice to 0°C water
= (334 J/g) × (10 g)
= 3340 J

You know that the energy to melt a substance is the mass times the heat of fusion, right?

And you know what the mass is.
And you know what the heat of fusion of ice/water is.

So what exactly is your question?

idk