We are asked to calculate the mass percent composition of each constituent element of perchloric acid.

sulfurous acid → HClO_{4}

Molar mass HClO_{4 }= 100.46 g/mol

Molar mass H = 1.01 g/mol

Molar mass Cl = 35.45 g/mol

Molar mass O = 16.00 g/mol

Calculate the mass percent composition of each constituent element of perchloric acid.

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