light is refracted through a diamond. if the angle of incidence is 30°, and the angle of refraction is 12°, what is the index of refraction?

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

well in order to answer this question you have to provide more information < 3

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.

the answer is c. nacl