For the following process, draw the materials flow diagram, write the independent reactions, do the degree of freedom analysis and complete the materials and energy balances 100 tons of hard lead (98%Pb,2%Sb) are melted in a steel kettle with electrical energy and then treated with 2 tons of PbO at the melting temperature. The products are a slag consisting of PbO and Sb2O3, analyzing 20%Sb and aPbSb alloy of lowered Sb content and negligible oxygen content. 3PbO+2Sb(inPb)=Sb2O3+3Pb For the following process, draw the materials flow diagram, write the independent reactions, do the degree of freedom analysis and complete the materials and energy balances 100 tons of hard lead (98%Pb,2%Sb) are melted in a steel kettle with electrical energy and then treated with 2 tons of PbO at the melting temperature. The products are a slag consisting of PbO and Sb2O3, analyzing 20%Sb and aPbSb alloy of lowered Sb content and negligible oxygen content. 3PbO+2Sb(inPb)=Sb2O3+3Pb