Question

How is H fusion used to calculate the mass of solid that 1 kj of energy will melt?

Answer 1

Answer : If in any reaction ΔH(fusion) is given we can consider its units;

ΔH(transition) has units (KJ/mol) and mass and molecular mass of that compound has unit mol/g and g respectively.

When we solved this, we get the units as KJ/mol which satifies the equation value for q.

So, q=n X ΔH (transition);

Hence, to find the mass of solid we can use the above equation.