For 11-10 refer to this figure. He- 1s² 8.it tells you the main energy level that the electrons occupied.
A. He B.1 C. s D.2

9.it tells you the orbital type that the electrons occupied.
A. He B.1 C. s D.2

10.it tells you the number of electrons occupying an orbital.
A. He B.1 C. s D.2​

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Modern weaponry has increased the number of deaths in wars and violent conflicts.

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.