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		Calculate molar mass | 
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| Calculations: Formula: Na2HPO4h2o Molar Mass: 159.9723 g/mol 1g=6.2510822186091E-03 mol Percent composition (by mass): Element Count Atom Mass %(by mass) Na 2 22.9898 28.74% H 1 1.0079 0.63% P 1 30.974 19.36% O 4 15.999 40% h 2 1.0079 1.26% o 1 15.999 10%  | 
		
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