An adiabatic vessel contains 1000g of liquid aluminum at 719C. Calculate the mass of Cr2O3 at room temperature, which, when added to the liquid aluminum (with which it reacts to form Cr and Al2O3 ), raises the temperature of the resulting mixture of Al2O3,Cr2O3, and Cr to 1691K. (O=16.0;Al=27.0;Cr=52.0g/atom) Given Thermodynamic data: Table 1. The Constant-Pressure Molar heat Capacities of Various Substances (CP=a+bT+cT2J/moleK) Table 2. The Standard Molar heats of Formation of Various Substances at 298K and Molar Heats of Melting and Transformation