Answer:
9 moles of particles are present in 1 mole of ethyl alcohol.
Step-by-step explanation:
1. Ethanol is ethyl alcohol with the chemical formula 
 
 
2. Molecular formula is given by 

3. 
 
 
4. 1 represents 1 mole of ethyl alcohol 
5. Subscripts represents the number of moles of each element. 
6. 2 moles of carbon atoms, 6 moles of Hydrogen atoms and 1 mole of oxygen atoms are present in 1 mole of ethyl alcohol. 
7. So, totally 9 moles of particles are present in 1 mole of ethyl alcohol 
8. 1 mole contains 
 particles or atoms or molecules or ions
 particles or atoms or molecules or ions 
9. For example 1 mole of 
 contains
 contains 
 molecules (contains 2 moles of H and 1 mole of O atoms )
 molecules (contains 2 moles of H and 1 mole of O atoms ) 
10. 1 mole of Na contains 
 Na atoms
 Na atoms 
11. 1 mole of 
 contains
 contains 
 molecules (1 mole of Ca, 1mole of C and 3 moles of O atoms )
 molecules (1 mole of Ca, 1mole of C and 3 moles of O atoms ) 
12. 1 mole of 
 contains
 contains 
 ions
 ions