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		Calculate molar mass | 
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| Calculations: Formula: (MgFe)7 Molar Mass: 561.015 g/mol 1g=1.78248353430835E-03 mol Percent composition (by mass): Element Count Atom Mass %(by mass) Mg 7 24.305 30.33% Fe 7 55.84 69.67%  | 
		
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