Calculate the percent composition of all elements the elements in the following compounds:
1- Calcium Hydroxide: Ca (OH)2
2- Sulfuric Acid: H2SO4
3- Ammonia: NH3
4- Ammonium Sulfate: (NH4)2 SO4
5- Ethanoic Acid: CH3COOH
6- Calculate the % of water in Epson salts MgSO4•7H2O
7- Calculate the % of the anhydrous salt (without water) in Cobalt(II) Chloride hexahydrate: CoCl2•6H2O
8- Calculate the % of ammonium ions in ammonium phosphate (NH4)3PO4
9- Which is the % water in Iron (II) sulfate heptahydrate FeSO4•7H2O?
10- Ammonium Iron (II) sulfate hexahydrate(NH4)2Fe(SO4)2•6H2O