Which of the following is formed when a barium atom achieves an octet?

Ba

Ba2-

Ba2+

Ba2

A fog over a lake. what two changes of state must occur to produce the fog? do the water molecules absorb or release energy during these changes of state? what happens to the motion of the water molecules as a result?

Why do lithium fluoride conduct electricity when molten

Carbon monoxide is a common atmospheric pollutant.

A minerals luster is produced by its ability to transmit light. Opaque minerals always have a metallic luster because they do not transmit any light. True False

Given the following reaction: 2D (g) + 3E (g) + F (g) ⟶ 4G (g) + H (g) When the concentration of D is decreasing by 0.10 M/s, how fast is the concentration of H increasing? When the concentration of G is increasing by 0.

What does ice cream melt on a hot day which type of thermal energy transfer does this melting represents

For which purpose do biochemists insert human genes into bacteria? to find a cure for the common cold to produce insulin for diabetics to kill resistant strains of bacteria to evolve certain species of bacteria

Cracks in rocks chemical or mechanical

A large boulder falls from an underwater ledge and crashes on the floor of the ocean. A pod of dolphins is 800 meters away. Determine how long it takes for the sound of the crash to reach the dolphins. A) 0.5 sec B) 0.3 sec C) 2.3 sec D) 1.9 sec

Given 4.80g of ammonium carbonate, find: Number of moles of the compound Number of moles of ammonium ions Number of moles of carbonate ions Number of moles of hydrogen atoms Number of hydrogen atoms