Plz me need
based on silicon's position on the periodic table, it has

a. 14 valence electrons distributed over three energy levels.
b. 14 electrons, which include 10 valence electrons in the second energy level and 4 electrons in the first energy level.
c. 14 electrons, which include 2 valence electrons in the third energy level and 12 electrons distributed over the first two energy levels.
d. 14 electrons, which include 4 valence electrons in the third energy level and 10 electrons distributed over the first two energy levels.

What can be added to the examples section of each circle? endothermic: ice melting into water, and a heat pack becoming warm exothermic: a glow stick glowing, and fireworks exploding endothermic: ice melting into water, and an instant ice pack turning cold exothermic: fireworks exploding, and gasoline burning endothermic: a glow stick glowing, and a heat pack becoming warm exothermic: an instant ice pack turning cold, and ice melting into water endothermic: gasoline burning, and an instant ice pack turning cold exothermic: ice melting into water, and an instant ice pack turning cold

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?