How many valence electrons does oxygen have? 2 4 6 8 10

Choose all the answers that apply. Which of the following usually indicates a chemical reaction? gas bubbles color change increase in temperature decrease in temperature release of light energy

What is the liquid element used in thermometers

For the reaction represented by the equation 2hno3 + mg (oh) 2® mg (no3) 2 + 2h2o, how many grams of magnesium nitrate are produced from 8.00 mol of nitric acid, hno3, and an excess of mg (oh) 2?

What happen in the dark reaction

how many grams of potassium chloride, KCL (molar mass is 74.55g/mol) are produced if 25 grams of potassium chlorate KClo^3 decompose

How many grams of chromium metal are plated out when a constant current of 8.00 a is passed through an aqueous solution containing cr3 + ions for 160. minutes?

During which stage of a thunderstorm does rain begin to fall? a. The development stage c. The mature stage b. The precipitation stage d. The waxing stage

What is released in the process of an atom moving from an excited level to a lower energy level?

Which two properties are characteristic of ionic compounds?

explain why the hydrogen atoms in a hydrogen gas molecule form nonpolar covalent bonds but the oxygen and hydrogen atoms in water molecules form polar covalent bonds