Avogadro’s number as conversion factor

A mole of substance is the amount that contains Avogadro s number (6.022x10 ) of chemical entities (atoms, molecules, or formula units). The mass (in grams) of a mole has the same numerical value as the mass (in amu) of the entity. Thus, the mole allows us to count entitles by weighing them. Using the molar mass (jM., g/mol) of an element (or compound) and Avogadro s number as conversion factors, we can convert among amount (mol), mass (g), and number of entities. The mass fraction of element X in a compound is used to find the mass of X in any amount of the compound. 

Using the molar mass (M, g/mol) of an element (or compound) and Avogadro s number as conversion factors, we can convert among amount (mol), mass (g), and number of entities. 

STRATEGIZE First convert to moles (using the molar mass of the compound) and then to number of molecules (using Avogadro s number). You will need both the molar mass of acetylsalicylic acid and Avogadro s number as conversion factors. You will also need the conversion factor between g and mg. 

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See also in sourсe #XX -- [ , , , , , ]

See also in sourсe #XX -- [ , , , , , ]

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