A 7.66 g sample of hydrated sodium sulfate, Na2SO4.xH2O, forms 4.06 g of anhydrous Na2SO4. What is the value of x? | Stoichiometry

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A 7.66 g sample of hydrated sodium sulfate, Na₂SO₄.xH₂O, forms 4.06 g of anhydrous Na₂SO₄. What is the value of x?

0.2

3.6

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