Respuesta :

133.0873 g/mol

(NH4)3PO3 - molar mass
Molar mass of (NH4)3 PO3 = 3x molar mass of N + 12x molar mass of H + molar mass of P + 3x molar mass of O = 3x14 + 12x1 + 31 + 16x3 = 133gram/mol.