How many moles of atoms are present in 1 moles of Al(OH)3 ?

Question

Is OH count as an atom? Or OH is something O atom and H atom combined?

Answer 1

One mole of Al(OH)3 will break down this way:

1 Al in the molecule X 1 mole = 1 mole Al atoms
3 O in the molecule X 1 mole = 3 mole O atoms
3 H in the molecule X 1 mole = 3 mole H atoms

total is 7 moles of atoms

Answer 2

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Answer 3

Each OH is one O atom and one H atom. Together they are a hydroxide ion.
4 total ions.
7 total atoms. One Al, three O, and three H