When electricity flows through water, the water molecules split into molecules of hydrogen and oxygen gas. how many oxygen (o2) molecules are produced from the splitting of two molecules of water (h2o) if the balanced equation for the reaction is as follows? 2h2o 2h2 + o2 a. 4 b. 3 c. 2 d. 1

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.