Molar and molecular weight of Cr2O3

• Relative molecular weight of Cr2O3: 151.9904
• Molar mass of Cr2O3: 151.9904 g/mol (0.15199 kg/mol)

Calculation of the relative molecular and molar mass of Cr2O3

• Mr[Cr2O3] = Ar[Cr] * 2 + Ar[O] * 3 = 51.9961 * 2 + 15.9994 * 3 = 151.9904
• Molar mass (kg/mol) = Mr[Cr2O3] : 1000 = 151.9904 : 1000 = 0.15199 kg/mol

Cr2O3: percent composition by element

• Chromium (Cr) = 103.9922 : 151.9904 * 100 = 68.42 %
• Oxygen (O) = 47.9982 : 151.9904 * 100 = 31.58 %

Molar mass calculator