1.37 moles of C6H6.
Explanation: To determine the number of moles of C6H6 containing 4.95 x 10^24 hydrogen atoms, we need to first determine the number of moles of hydrogen atoms in C6H6 and then use this to find the number of moles of C6H6.
The molecular formula of C6H6 is made up of 6 carbon atoms and 6 hydrogen atoms, so the total number of hydrogen atoms in C6H6 is 6 x Avogadro's number (6.022 x 10^23) = 3.6132 x 10^24 hydrogen atoms.