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A student is running an experiment in which 25.9grams of Na2CrO4 is needed, but the only jar of reagent in the lab is labelled sodium

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A student is running an experiment in which 25.9grams of Na2CrO4 is needed, but the only jar of reagent in the lab is labelled sodium chromate decahydrate. How many grams of the hydrate must the student weigh out in order to get the desired amount of the anhydrous compound? g Na2CrO41OH2O

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