Please solve this problem for me

Question

Consider a 8.41 mol sample of . How many atoms of H would be in this sample? Report your answer with 3 significant figures and in scientific notation. Use * for the multiplication symbol.

Answer 1

For every molecule of C7H16 that you have there will be 16 Hydrogen atoms. Another way to say this would be to write it like this:

16 Hydrogen atoms / 1 molecule of C7H16

Therefore, if you have 8.41 moles of C7H16 and you are looking for the number of moles of H you could use the following:

( 8.41 moles C7H16 ) * ( 16 moles of Hydrogens / 1 mole of C7H16 ) = 134.56 moles of Hydrogen

To convert moles to atoms you can use Avogadro’s number, which is 6.022 X 10^23 atoms = 1 mole

( 134.56 moles of Hydrogen ) * ( 6.022 *10^23 atoms of Hydrogen / 1 mole Hydrogen ) = 8.10 * 10^25 atoms of Hydrogen.