Ineed to know how to solve the equations.

1.Therefore ethanol has : 2 mols of carbon, 1 mole of oxygen and 6 mols of hydrogen. The requested mass percents are: 52.14% ; 34.77% ; 13.15%.

2. You should get 14.007(2) which is 28.014

3. I have no idear

4.idk

5. im sorry man this is too hard

Explanation:

ugh fiel iente of insistí is did kiwis jaj

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.