According to the primordial soup model, which statement tells how the chemicals in earth’s prehistoric surface came alive? a. volcanic eruptions caused change in the chemicals. b. a huge meteor struck the earth and caused the chemicals to change. c. cooler temperatures caused the chemicals to split apart. d. storms and lightning caused some chemicals to be combined.

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.