Electrons will fill all empty orbitals within a sublevel before they begin to pair up. This is: A. Hund’s rule
B. The Aufbau principle
C. None of these
D. Conservation of energy

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

Label a-f based on the table using c for concentrated and d for dilute

Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is 15.5 m/s². how much force did the volleyball player apply to the ball? 62.0 n 3.87 n 62.0 m/s² 3.87 m/s²