Study chem. Flash Cards

 
Pile Management Card
chem.

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calculating percent comp
find forula mass
divide by mass or percent of 1 element
subtract b from 100.
looking for moles given molecules
divide molecules by avegadros number
looking for molecules given mass
multiply by avagadro's #
looking for atoms given moles, more than 1 unit
multiply the moles X units of element
multily product by avedgadro's #
llooking for atoms, given moles. one unit only
multiply # of moles X avogadro's #
looking for moles, given mass
find formula mass
divide given mass by formula mass
looking for moles given mass
find formula mass
multiply formula mass x moles
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