Average Atomic Mass EX: Calculate the avg. atomic mass of oxygen if its
abundance in nature is 99.76% 160, 0.04% 170, and
0.20% 180.
Avg.
Atomic =
Mass
(16)(99.76) + (17)(0.04)+(18)(0.20) 16 amu
100

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