Chromium metal crystallizes as body-centered lattice. If the atomic radius of Cr is 1.25 Å, what is the density of Cr metal in g/cm3?Consider the following standard heats of formation:P4O10(s) = -3110 kJ/mol    H2O(l) = -286 kJ/mol     H3PO4(s) = -1279 kJ/molCalculate the change in enthalpy for the following process:P4O10(s) + 6H2O(l) ? 4H3PO4(s).