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2xNa => 46u Atomic Mass
1x(SO4) => 96u atomic mass
tot = 142u
4.5g/142u = 0.03169014085g/u
Ans x 96u = 3.04g = 3.0g of SO4
Wiki User
∙ 16y ago
To determine the mass of SO4 ions in 4.5g of Na2SO4, first calculate the molar mass of Na2SO4 (which is 142.04 g/mol). Next, find the molar mass ratio of SO4 in Na2SO4 (which is 96.06 g/mol out of 142.04 g/mol). Finally, calculate the mass of SO4 ions by multiplying the molar mass ratio by the total mass of Na2SO4 (4.5g).
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