Molar and molecular weight of NiSe

• Relative molecular weight of NiSe: 137.6534
• Molar mass of NiSe: 137.6534 g/mol (0.13765 kg/mol)

Calculation of the relative molecular and molar mass of NiSe

• Mr[NiSe] = Ar[Ni] + Ar[Se] = 58.6934 + 78.96 = 137.6534
• Molar mass (kg/mol) = Mr[NiSe] : 1000 = 137.6534 : 1000 = 0.13765 kg/mol

NiSe: percent composition by element

• Nickel (Ni) = 58.6934 : 137.6534 * 100 = 42.639 %
• Selenium (Se) = 78.96 : 137.6534 * 100 = 57.361 %

Molar mass calculator