What is the total number of valence electrons in a calcium atom in the ground state?

(1) 8 (3) 18

(2) 2 (4) 20

Mercury and bromine willreact with each other to produce mercury (II) bromide:Hg (l) + Br2 (l) - ->HgBr2 (s) Consider an experimentwhere 10.0 g Hg is reacted with 9.00 g Br2.

The four main reservoirs of carbon are the A. Glaciers, trees, living animals, and atmosphere. B. Atmosphere, terrestrial biosphere, oceans, and sediments. C. Air, soil, plants, and freshwater. D. Oceans, soil, ice caps, and plants.

Three reasons for air is mixture and water is compound

Determine the amount of energy absorbed per gram of ice as it melted

If I make store-bought brownies, are they a compound or a mixture? (Including Sugar)

Draw the curved arrow mechanism for the conversion of aniline into benzenediazonium ion, and draw the final product that forms after the benzenediazonium ion is treated with

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?