Molar and molecular weight of NI3

• Molecular formula: NI3 or I3N
• Relative molecular weight of NI3: 394.72011
• Molar mass of NI3: 394.72011 g/mol (0.39472 kg/mol)

Calculation of the relative molecular and molar mass of NI3

• Mr[NI3] = Ar[I] * 3 + Ar[N] = 126.90447 * 3 + 14.0067 = 394.72011
• Molar mass (kg/mol) = Mr[NI3] : 1000 = 394.72011 : 1000 = 0.39472 kg/mol

NI3: percent composition by element

• Iodine (I) = 380.71341 : 394.72011 * 100 = 96.451 %
• Nitrogen (N) = 14.0067 : 394.72011 * 100 = 3.549 %

Molar mass calculator