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Raindrop

  • 3 years ago

How many atoms of hydrogen are found in 8.01 mol of decane, C10H22?

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  1. Mertsj
    • 3 years ago
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    1 mole of decane contains avagadro's number of molecules or 6.023 x 10^23 molecules. So 8.01 moles contains : \[8.01\times 6.023\times 10^{23} molecules\]

  2. Mertsj
    • 3 years ago
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    But each molecule of decane contains 22 atoms of hydrogen so multiply the above answer by 22 to get the atoms of hydrogen.

  3. Raindrop
    • 3 years ago
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    I did that and it said I was wrong.

  4. Mertsj
    • 3 years ago
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    Perhaps you entered your answer in the wrong form or didn't pay attention to significant digits.

  5. Mertsj
    • 3 years ago
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    What did you enter?

  6. Mertsj
    • 3 years ago
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    I got 1061.37 x 10^23 which would be 1.06 x 10^26

  7. Mertsj
    • 3 years ago
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    Three significant digits are all we are entitled to.

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