Have you noticed that the sun is always behind you when you look at a rainbow? Think about the model of light you developed in class to help you explain why the sun must be behind you for you to see a rainbow. pwese help me

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .

What are the two basic types of satellites

Which is the best term to use when describing the energy of position? chemical kinetic potential electromagnetic