How many hydrogen atoms are there in 1 mole of propane (C3H8)?

In a molecule of propane (C3H8), the chemical formula indicates that there are three carbon atoms and eight hydrogen atoms. The subscript "8" in the formula directly signifies that for every molecule of propane, there are 8 hydrogen atoms bonded to the three carbon atoms. Therefore, when considering one mole of propane, which is 6.022 x 10²³ molecules (Avogadro's number), each of those molecules contains 8 hydrogen atoms.

To determine the total number of hydrogen atoms in 1 mole of propane, you can multiply the number of hydrogen atoms per molecule (8) by the number of molecules in a mole (6.022 x 10²³). However, the answer to the question specifically pertains to the number of hydrogen atoms present in one molecule of propane, not the entire mole. Thus, the correct response, identifying the number of hydrogen atoms in one mole of propane, is that there are 8 hydrogen atoms per molecule of propane, leading to the conclusion that there are 8 hydrogen atoms in 1 mole of propane.