Answer:
We have 8.22 * 10^24 C atoms
We have 4.11 * 10^24 ethanol molecules
Explanation:
Step 1: Data given
Molecular formula of ethanol = C2H6O
Mass of C = 164 grams
Molar mass C = 12.01 g/mol
Step 2: Calculate moles C
Moles C = mass C / molar mass C
Moles C = 164 grams / 12.01 g/mol
Moles C = 13.66 moles
Step 3: Calculate molecules of C
Atoms C = moles C * number of Avogadro
Atoms C = 13.66 moles * 6.02 * 10^23 molecules/ mol
Atoms C = 8.22 * 10^24 C atoms
Step 4: Calculate molecules in the sample
For 1 mol C2H6O we have 2 moles C
For 13.66 moles C we have 13.66/ 2 = 6.83 moles C2H6O
Molecules C2H6O = 6.83 moles * 6.02 * 10^23 = 4.11 *10 ^24 molecules
