What is the mass of 00250 mol of P205 O 355 g 00250g O 5676

What is the mass of 0.0250 mol of P205? O 35.5 g 0.0250g O 5676 g O 3.55 g

Solution

Molar mass of P₂O₅ = (2*30.9738 + 5*15.9994) g/mol = 141.9446 g/mol.

Mass of 0.0250 mol P₂O₅ = (moles of P₂O₅)*(molar mass of P₂O₅) = (0.0250 mole)*(141.9446 g/mol) = 3.548615 g 3.55 g (ans).