PLEASE ANSWER

How does refraction work?

A. Light speeds up as it goes through more dense materials.

B. Light waves bend when they go through a small slit or hole.

C. Light slows down as it goes through more dense materials.

D. Light waves get closer together as they go through more dense materials.

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

How many moles are in 123.0 grams of kclo4?

What is the work done by the electric force to move a 1 c charge from a to b?