How many grams of propane must be burned to provide the heat needed to melt a 75.0-g piece of bromine (at its melting point) and bring the resulting liquid to a boil (with no vapourization)? Assume a constant pressure of 1 bar and use the following data:

Hfo(H2O(g))=-241.83 kJ/mol, Hfo(O2(g))=0 kJ/mol, Hfo(CO2(g))=-393.5 kJ/mol, Hfo(C3H8(g))=-103.8 kJ/mol
Tfus(Br2)=-7.25 oC, Tvap(Br2)=59.2 oC

Hfus(Br2)=10.8 kJ/mol, Cp(Br2(l))=75.69 J/mol/oC