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by cowsandmilk
2798 days ago
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The purpose of the mol is to be a convenient measure for us working in the SI unit off grams. We need to get between grams and a count of molecules, that's the number. Sure, we could work in dozens, but then we would have some other arbitrary constant we would have to memorize to go from grams to a count of molecules. And the nice thing about mols is that you don't have to memorize Avogadro's number to use them; while you would have to memorize a constant to go from grams to any other unit of counting molecules (that constant in the case of mols is 1, it would be something else for any other choice of units). |
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I think that number is only true for carbon-12.
>but then we would have some other arbitrary constant we would have to memorize to go from grams to a count of molecules.
I think we already have to do that, hence molar mass.