I believe the answer is a because 2 times 12 is 24. Hope this helped
Using the method chromatography
Answer:
See the attached image
Explanation:
The first step is the production of the <u>carboanion</u> in the compound. We will get the <u>negative charge</u> on the methyl group and the <u>positive charge</u> in the Li atom.
Then the carboanion can <u>attack the acetone</u>. The double bond of the oxo group would <u>delocalized</u> upon the oxygen, generating a positive charge in the carbon that can be attacked by the carboanion formaiting a <u>new C-C bond</u>.