Question

how much heat is required to convert 1 gm of ice into steam​

Answer 1

Here's an answer a certified website gave me when I asked the same question:

Heat required in converting 1g of ice at −10∘C into steam at 100∘C is: latent heat of fusion= 80 cal/g80 cal/g. latent heat of vaporization=540 cal/g

Hopefully this helps