Molar and molecular weight of OPb

• Molecular formula: OPb or PbO
• Relative molecular weight of OPb: 223.1994
• Molar mass of OPb: 223.1994 g/mol (0.2232 kg/mol)

Calculation of the relative molecular and molar mass of OPb

• Mr[OPb] = Ar[O] + Ar[Pb] = 15.9994 + 207.2 = 223.1994
• Molar mass (kg/mol) = Mr[OPb] : 1000 = 223.1994 : 1000 = 0.2232 kg/mol

OPb: percent composition by element

• Oxygen (O) = 15.9994 : 223.1994 * 100 = 7.168 %
• Lead (Pb) = 207.2 : 223.1994 * 100 = 92.832 %

Molar mass calculator