2 atome nitrogen , 1 is correct
Answer:
no of formula unit =
Explanation:
atomic mass of CaCl2 = 40 + 2×35.5 = 111 g.
no of formula unit = no of moles × Avagadro number
=
The chemical formula is CF₂O.
Na(OH)4
Look at the charges and add them up
Na(OH) Na(OH)
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