How many molecules are in 10 moles of calcium?
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This where “Avagadro’s” number comes in. The number 6.022 x 10^23 is Avogadro's number. It is a very important relationship to remember: 1 mole = 6.022 x 10^23 atoms, molecules, fruit flies, etc.
Like 12 is a doz eggs, 6.022x10^23 of anything is one mole of that thing.
To convert from moles to atoms, multiply the moles by Avogadro's number. To convert atoms to moles, divide the atom amount by Avogadro's number.
Now since Ca is a monatomic element and not a molecule, (molecules are more than one atom).
10/6.022 x 10 ^23 = 1.661E-23 moles. (not sure if this is correct my calculator is giving me an impossible number)
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