Sulfat

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Sulfat Gypsum is hydrated calcium sulfat,CaSO4·xH2O.A residue of 5.65g of anhydrous calcium sulfate is obtained by heating 7.15g gypsum.Determine the empirical formula of gypsum不用翻译……尤其是拿翻译软件翻译的……这个太。咳咳要