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Use the Meferences to access important values if needed for this question. One of the hydrates of Na2SO4 is sodium sulfate heptahydrate. A 85.7 gram

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Use the Meferences to access important values if needed for this question. One of the hydrates of Na2SO4 is sodium sulfate heptahydrate. A 85.7 gram sample of Na2SO47H2O was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, how many grams of the anhydrous compound remained

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