What is the percent composition by mass for sodium (Na) in sodium phosphate (Na3PO4)? % Na = (_/_)x100% = _% NNA

The percent composition by mass for sodium (Na) in Sodium phosphate (Na₃PO₄) : 42.07%

Given

Compound of Sodium phosphate (Na₃PO₄)

Required

The percent composition by mass for sodium (Na)

Solution

The Comparative Law (Proust ) : compounds are formed from elements with the same Mass Comparison

MW Na₃PO₄ = 163,94 g/mol

Ar Na=22,989769g/mol

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