Question

Calculate the mass percent of different elements in sodium sulphate (Na2SO4).​

Answer 1

Answer:

Explanation:

Calculate the mass percent of different elements present in sodium sulphate (Na2SO4).

Mass percent of an element. ∴ Mass percent of sodium:

Mass percent of sulphur:

Mass percent of oxygen:

Answer 2

Here is ur answer:

Molar mass of Na₂SO₄= 142

Mass% of Na=$\frac{2 \times 23}{142} \times 100 = 32.39\%$

Mass% of S=$\frac{32}{142} \times 100 = 22.53\%$

Mass% of O = $\frac{4 \times 16}{142} = 45.07\%$

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