Total number of atoms in 0.5 moles of potassium dichromate
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If you have 0.5 moles of K2Cr2O7, then you
just multiply the number of moles by
avogadro's number
= (0.5)(6.022x1023) = 3.011x1023 molecules.
Since there are 11 atoms per molecule (2+2+7),
then you just multiply 3.011x1023 by 11 and you
get 3.3121x1024 atoms.
If you have 0.5 moles of K2Cr2O7, then you
just multiply the number of moles by
avogadro's number
= (0.5)(6.022x1023) = 3.011x1023 molecules.
Since there are 11 atoms per molecule (2+2+7),
then you just multiply 3.011x1023 by 11 and you
get 3.3121x1024 atoms.
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