4) The constant pressure molar heat capacity for lead (Pb,MW=207.2g/mol), measured at T=25.0C, is Cpm= 26.70J/molK. a) Assuming that Cp,m is is independent of temperature, find q, the amount of heat that must be added to 1.000kg of solid lead, to change the temperature from Ti=25.0C to Tf=327.5C (the normal melting point for lead). Assume the heat is added under conditions of constant pressure. b) The value for the constant pressure molar heat capacity for real substances usually depends on temperature. One common expression for the temperature dependence of Cp,m is the following Cp,m=a+bT+(c/T2) For lead, a=22.13J/molK,b=1.172102J/molK2, and c=9.6104JK/mol Using the expression for Cp,m in eq 4.1, recalculate the value for q for the constant pressure heating of lead in part a of this