Aconducting sphere has a net charge of –6.4 × 10–17
c. what is the approximate number of excess electrons on the sphere?

The charge of a single electron is -1.6 x 10^(-19) C. To figure out the total number of excess electrons, divide the net charge by the charge of a single electron:

-6.4 x 10^(-17) / -1.6 x 10^(-19) = 400

There are about 400 excess electrons on the sphere.

Man i dont know this answer