steam at hundred degree celsius is passed over 1000 gram of ice at zero degree celsius. after sometime 600 gram of ice at zero degree celsius is left and 450 gram of water at zero degree celsius is formed. calculate the specific latent heat of vaporization of steam. specific heat capacity of water = `4200J(kg^-1)^@C^-1` and latent heat of fusion of ice `336 Jg^-1` .