Problem

Problem

Glauber's salt is : a. Na2SO4\text{Na}_2\text{SO}_4 b. Na2SO4⋅H2O\text{Na}_2\text{SO}_4 \cdot \text{H}_2\text{O} c. Na2SO4⋅5H2O\text{Na}_2\text{SO}_4 \cdot 5\text{H}_2\text{O} d. Na2SO4⋅10H2O\text{Na}_2\text{SO}_4 \cdot 10\text{H}_2\text{O}

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