rexmatt9367 rexmatt9367

08-01-2024
Chemistry

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A 100. g mixture of Na₂S₂O₃⋅7H₂O and Na₂S₂O₃ₐ is heated to drive off all of the water, forming 40.0 g H₂O. What was the percent by mass of S in the original mixture, before heating?

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