Question: how many hydrogen atoms are in one mole of ethanol c2h5oh?
Answer: Example 1: Determine the mass of 1 mol of ethanol, C2H5OH. Solution: Each molecule of C2H5OH consists of 2 carbon atoms, 6 hydrogen atoms and 1 oxygen atom. This means 1 mole of C2H5OH would have 2 mol of C atoms, 6 mol of H atoms and 1 mol of O atoms, bonded to form molecules.