Determine the formula of a substance if the mass fractions are known: Hydrogen-3.06%, phosphorus-31.63%, oxygen-65.31%

univerkov | November 30, 2020 | education

n (H) = 3.06 mol
n (P) = 31.63 / 31 = 1.02 mol
n (O) = 65.31 / 16 = 4.08 mol
Px: Hy: Oz = 1.02 mol: 3.06 mol: 4.08 mol = 1: 3: 4
H3PO4 – phosphoric acid

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