5. A cougar with a mass of 80 kg is standing at the edge of a cliff. Find the cougar’s potential energy if the cliff is 70 m high. show your work

What is the difference between a substance "getting wet" and "being dissolved" in a liquid at the particulate level?

Four statements about the development of the atomic model are shown below. a: electrons have wavelike properties. b: atoms have small, negatively charged particles. c. the center of an atom is a small, dense nucleus. d: atoms are hard, indivisible spheres. which order of statements represents the historical development of the atomic model? c-d-a-b c-d-b-a d— в-а — с d-b-c-a

Sodium chloride can be made as follows: 2na + cl2 ? 2nacl i calculate the maximum amount of nacl possible if 2.3 g of sodium was reacted with excess chlorine. show all your workings.