## Raindrop Group Title How many atoms of hydrogen are found in 8.01 mol of decane, C10H22? one year ago one year ago

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1. Mertsj Group Title

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 Group Title

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 Group Title

I did that and it said I was wrong.

4. Mertsj Group Title

Perhaps you entered your answer in the wrong form or didn't pay attention to significant digits.

5. Mertsj Group Title

What did you enter?

6. Mertsj Group Title

I got 1061.37 x 10^23 which would be 1.06 x 10^26

7. Mertsj Group Title

Three significant digits are all we are entitled to.