What is latent heat of fusion?

Why is latent heat of fusion of solid carbon dioxide less than that of silicon dioxide ?

What is latent heat of a substance?

Two pieces of ice, of equal mass and moving towards each other with the same velocity, collide head on and are vaporised due to this collision. Find out the minimum initial velocity of the pieces of ice. Given, initial temperature, specific heat and latent heat of fusion of ice are -12^(@)C, 0.5 cal cdot g^(-1) cdot^(@)C^(-1) and 80cal cdot^(@)g^(-1) respectively, latent heat of steam is 540 cal cdot g^(-1) .

The temperature of a piece of lead is 27^(@)C . Find out the minimum velocity of its impact with a wall so that it melts completely. Suppose 58% of the heat generated is dissipated. Given, J = 4.2 J cdot cal^(-1) , melting point, specific heat and latent heat of fusion of lead are 327^(@)C, 0.03 cal cdot g^(-1) cdot^(@)C^(-1) and 5 cal cdot g^(-1) , respectively.

In SI unit the latent heat of fusion of ice is :

What is the latent heat of the fusion of ice?

22320 cal of heat is supplied to 100 g of ice at 0^(@)C . If the latent heat of fusion of ice is 80cal g^(-1) and latent heat of vaporization of water is 540cal g^(-1) , the final amount of water thus obtained and its temperature respectively are

10g of water at 30^(@)C and 5g of ice at -20^(@) C are mixed together in a calorimeter. What is the final temperature of the mixture? Given specific heat of ice= 0.5 cal g^(-1) (""^(0)C)^(-1) and latent heat of fusion of ice =80 cal g^(-1)