Final answer:
Ethanol, with the formula C2H6O, contains 6 hydrogen atoms per molecule. Therefore, 2 molecules of ethanol contain a total of 12 hydrogen atoms.
Step-by-step explanation:
The alcohol in question with the formula 2C2H6O, which seems to be an error, likely refers to ethanol, which has the correct formula C2H6O. Ethanol is composed of 2 carbon atoms, 6 hydrogen atoms, and 1 oxygen atom. To determine the number of hydrogen atoms in 2 molecules of ethanol (C2H6O), you would calculate as follows:
For 1 molecule of ethanol: C2H6O contains 6 hydrogen atoms.
For 2 molecules of ethanol: 6 H atoms/molecule x 2 molecules = 12 hydrogen atoms.