1. Understand the Formula:

* C7H16 represents the molecule heptane. It has 7 carbon atoms (C) and 16 hydrogen atoms (H).

2. Avogadro's Number:

* Avogadro's number states that 1 mole of any substance contains 6.022 x 10^23 particles (atoms, molecules, etc.).

3. Calculation:

* Step 1: Determine the number of H atoms per molecule of C7H16: There are 16 H atoms.

* Step 2: Multiply the number of H atoms per molecule by Avogadro's number: 16 atoms/molecule * 6.022 x 10^23 molecules/mole = 9.635 x 10^24 atoms/mole

Therefore, there are 9.635 x 10^24 hydrogen atoms in 1 mole of C7H16.