What Is the Best Way to Convert Molecules to Grams?

To convert from molecules to grammes, divide the number of molecules in a substance by Avogadro’s number to get the number of moles, then increase the number of moles by the substance’s molar mass. The number 6.022 x 1023 is Avogadro’s number.

The number of molecules or atoms per mole of any substance is represented as Avogadro’s number, which is a constant. To perform a computation, students must first determine the substance’s molar mass, which may be determined from its chemical formula and is expressed in grammes per mole.

The formula to convert from molecules to grammes is (N number of molecules) /(6.022 x 1023) x (substance’s molar mass in grams/mol), where N is the number of molecules or moles in the material.

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Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.


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