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As 3H3PO4 , there are 9(nine) hydrogen atoms.

3H3PO4 means that there are 3 (three) molecules of phosphoric acid. ;

3H3PO4 = H3PO4 + H3PO4 + H3PO4

However, as one molecule of phosphoric acid, there are only 3 (three) atoms of hydrogen present.

The structure of phosphoric acid (as best I can show it is ;_

P(=O) (-OH)3

That is one phosphorus atom double bonded to one oxygen atom, and three hydroxide groups directly bonded to the phosphorus.

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lenpollock

Lvl 16
2y ago

What else can I help you with?