How many elements?

Ca4H7 (OH) 5

Which of the following is an example of industrial water use?

On analysis, an equilibrium mixture for the reaction 2H2S (g) LaTeX: / longleftrightarrow⟷ 2H2 (g) + S2 (g) was found to contain 1.0 mol H2S, 4.0 mol H2, and 0.80 mol S2 in a 4.0 L vessel. Calculate the equilibrium constant, Kc, for this reaction.

John's class is doing an experiment that involves mice. The mice are kept in a large, clean cage, and John gives them water and food every day.

Why are metals good conductors of electrical current? A. Electrons can flow freely in metals. B. Electrons can be permanently transferred from one metal atom to another. C. Electrons stay in fixed positions in metals. D.

What three characteristics of matter does chemistry deal with

Which of the following is an element? a. carbon monoxide gas (co) b. magnesium chloride salt (mgcl) c. hydrochloric acid (hcl) d. zinc metal (zn)

Describe the formation of an aqueous KI solution when KI dissolves in water

Which the following countries founded their first permanent settlement in North America: England, the Netherlands, France, and Spain

Why does salt separated from a saltwater solution look different than the salt that dissolved in the water

Which of the compounds below is not an example of a molecular solid?