You have 1.00 L of a solution with a pH of 2.0. What is the pH of the solution if 500 mL of water is added to it? a.) 2.18
b.) 2.67
c.) 1.5
d.) 2.5

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Light waves travel than sound waves.

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.