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March 27, 2017

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If a mole of hydrogen gas (H2) contains 6.02 x 10^23 molecules, how many molecules are there in 10.0 moles of hydrogen gas?
Answer

60.20 x 10^23 molecules
6.0 x 10^23 molecules
6.02 x 10^20 molecules
6.02 x 10^24 molecules
None of these is correct.


would it be 6.02x10^24 or none of these, i am only confused because avogadro # can be 10 moles or 1 mole or any thing quantity.

  • chemistry - ,

    No, it can't. Avogadro's number is only one value and that value is 6.022 x 10^23 molecules per 1 mole of molecule (or 6.022 x 10^23 atoms per 1 mole of atoms or 6.022 x 10^23 somethings per 1 mole of anythings). Therefore, 10 moles should be just 10x that value so 6.02 x 10^24 is correct.

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