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Old December 22nd, 2006, 02:37
student12 student12 is offline
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Default Stochiometry
1)Calculate the amount of metal ions, in mol, in 5g of
a) Sodium carbonate
b) hydrated nickel sulfate

2) Gypsum is hydrated clacium sulfate (CaSO4.xH2O). A residue of 5.65g of anhydrous calcium sulfate is obtained by heating 7.15g of gypsum. Determine the empirical formula of gypsum.

Please show working.
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Old January 5th, 2007, 17:27
student12 student12 is offline
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