What is the balanced equation when copper chloride reacts with sodium nitrate

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

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction