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		Calculate molar mass | 
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| Calculations: Formula: Fe(NO3)3.(H2O)9 Molar Mass: 403.9852 g/mol 1g=2.47533820545901E-03 mol Percent composition (by mass): Element Count Atom Mass %(by mass) Fe 1 55.84 13.82% N 3 14.007 10.4% O 18 15.999 71.29% H 18 1.0079 4.49%  | 
		
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