Molar and molecular weight of (CH3)2CHBr

• Molecular formula: (CH3)2CHBr or C3H7Br
• Relative molecular weight of (CH3)2CHBr: 122.99168
• Molar mass of (CH3)2CHBr: 122.99168 g/mol (0.12299 kg/mol)

Calculation of the relative molecular and molar mass of (CH3)2CHBr

• Mr[(CH3)2CHBr] = Ar[C] * 3 + Ar[H] * 7 + Ar[Br] = 12.0107 * 3 + 1.00794 * 7 + 79.904 = 122.99168
• Molar mass (kg/mol) = Mr[(CH3)2CHBr] : 1000 = 122.99168 : 1000 = 0.12299 kg/mol

(CH3)2CHBr: percent composition by element

• Carbon (C) = 36.0321 : 122.99168 * 100 = 29.296 %
• Hydrogen (H) = 7.05558 : 122.99168 * 100 = 5.737 %
• Bromine (Br) = 79.904 : 122.99168 * 100 = 64.967 %

Molar mass calculator