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? asked in Science & MathematicsChemistry · 8 years ago

8.50 x 10^21 molecules of H3Po4. How many atoms of P ?

Can someone please explain how the shelf for dimesnional anyalsis would be set up for this problem.

I know you start with 8.50 molecules of H3Po4 but Im not sure what to do next.

Thanks alot !

2 Answers

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  • Trevor H
    Lv 7
    8 years ago
    Favorite Answer

    Each molecule of H3PO4 contains 1 atom of P

    If you have 8.50*10^21 molecules of H3PO4

    You have 8.50*10^21 atoms of P.

  • Anonymous
    8 years ago

    8.50 E21 molescules of phos acid * 1 P per Phos acid

    = 8.50 * 10^21 atoms of P

    Source(s): Soc
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