Molar and molecular weight of PbS

• Relative molecular weight of PbS: 239.265
• Molar mass of PbS: 239.265 g/mol (0.23927 kg/mol)

Calculation of the relative molecular and molar mass of PbS

• Mr[PbS] = Ar[Pb] + Ar[S] = 207.2 + 32.065 = 239.265
• Molar mass (kg/mol) = Mr[PbS] : 1000 = 239.265 : 1000 = 0.23927 kg/mol

PbS: percent composition by element

• Lead (Pb) = 207.2 : 239.265 * 100 = 86.599 %
• Sulfur (S) = 32.065 : 239.265 * 100 = 13.401 %

Molar mass calculator