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		Calculate molar mass | 
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| Calculations: Formula: Fe.(NH4)2(SO4)2.6h20 Molar Mass: 404.9772 g/mol 1g=2.46927481349567E-03 mol Percent composition (by mass): Element Count Atom Mass %(by mass) Fe 1 55.84 13.79% N 2 14.007 6.92% H 8 1.0079 1.99% S 2 32.06 15.83% O 8 15.999 31.6% h 120 1.0079 29.87%  | 
		
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