How many grams of calcium chloride should be dissolved in 500.0mL of water to make a 0.20m solution of calcium chloride?

Explanation for basic character?

What happens when light is scattered?

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d