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		Calculate molar mass | 
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| Calculations: Formula: Mn3NO2.4H2O Molar Mass: 282.8782 g/mol 1g=3.53509036751506E-03 mol Percent composition (by mass): Element Count Atom Mass %(by mass) Mn 3 54.938 58.26% N 1 14.007 4.95% O 6 15.999 33.93% H 8 1.0079 2.85%  | 
		
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