In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. how many lone pairs of electrons are present in the lewis structure of calcium sulfide?

Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?

Question 5 match each term to its description. match term definition excess reactant a) reactant that can produce a lesser amount of the product limiting reactant b) reactant that can produce more of the product theoretical yield c) amount of product predicted to be produced by the given reactants

Type the letter that represents the correct location for each particle type below. the neutron is found at __ the electron is found at __ the proton is found at __