Molar and molecular weight of CrO3

• Relative molecular weight of CrO3: 99.9943
• Molar mass of CrO3: 99.9943 g/mol (0.09999 kg/mol)

Calculation of the relative molecular and molar mass of CrO3

• Mr[CrO3] = Ar[Cr] + Ar[O] * 3 = 51.9961 + 15.9994 * 3 = 99.9943
• Molar mass (kg/mol) = Mr[CrO3] : 1000 = 99.9943 : 1000 = 0.09999 kg/mol

CrO3: percent composition by element

• Chromium (Cr) = 51.9961 : 99.9943 * 100 = 51.999 %
• Oxygen (O) = 47.9982 : 99.9943 * 100 = 48.001 %

Molar mass calculator