G A Claisen reaction requires an ester and the alkoxide base of the ester. Draw the mechanism arrows for the Claisen reaction below. Be sure to include lone pairs of electrons and nonzero formal charges on all species. When drawing the enolate place the negative charge on the carbon not the oxygen.

Explanation:

The reaction is incomplete cause you are not putting the structure. However I manage to find one, and it's in picture 1. In picture 2 you have the whole mechanism.

A claisen reaction involves an ester and an alkoxide base. It could also work with acid, but works better with a base.

This reaction is done in 4 steps. The first step is the formation of the ester enolate. The second step is a nucleophilic adition. The third step is eliminating the etoxide formed. The fourth step is transform the ceto exter in an enolate. and the final step is forming the enolate of the ceto ester.

In the picture below, the second, you can see the whole mechanism and the final product in each step mentioned above. Check it out.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.