Unit #5 COMPOUNDS

5.9 - Information in a Chemical Formula

Number Ratio of Ions in Na2CO3

The chemical formula of
Na2CO3
consists of:
number of
Na+ ions 		number of
CO32- ions
one formula unit
two Na+ ions
one CO32- ions
one dozen formula units
two dozens Na+ ions
one dozen CO32- ions
one mole formula units
(We will be covering the mole concept in details in section 7.2.)
2 moles Na+ ions
1 mole CO32- ions




 


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