1.
Find the amount of heat supplied to decrease the volume of an ice–water mixture by 1 cm31\,\text{cm}^3 without any change in temperature. (ρice=0.9 ρwater\rho_{\text{ice}} = 0.9\,\rho_{\text{water}}, Lice=80 cal/gL_{\text{ice}} = 80\,\text{cal/g}).