Molar and molecular weight of P2H4

• Molecular formula: P2H4 or H4P2
• Relative molecular weight of P2H4: 65.979284
• Molar mass of P2H4: 65.979284 g/mol (0.06598 kg/mol)

Calculation of the relative molecular and molar mass of P2H4

• Mr[P2H4] = Ar[H] * 4 + Ar[P] * 2 = 1.00794 * 4 + 30.973762 * 2 = 65.979284
• Molar mass (kg/mol) = Mr[P2H4] : 1000 = 65.979284 : 1000 = 0.06598 kg/mol

P2H4: percent composition by element

• Hydrogen (H) = 4.03176 : 65.979284 * 100 = 6.111 %
• Phosphorus (P) = 61.947524 : 65.979284 * 100 = 93.889 %

Molar mass calculator