PLEASE SOMEONE HELP PLEASE ASAP create a model to represent the ionic bonds in a crystal of the salt lithium iodide

Find the mass in grams of 1.37x1020 particles of h3po4

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.