When converting from moles to atoms/molecules, use Avogadro's number, which is actually x and when converting from moles to grams, use the molar mass in grams per mole, not the atomic mass in atomic mass units.
Molar mass is the weight of one mole of any chemical compounds. How do you calculate molar mass of element (hydrogen)? Molar mass for an element is simply the atomic mass of the element Molar mass of hydrogen = atomic Read More .
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