7. A student has five cups of water that each have 50 ml. Cup 1 has 84 degree water, cup 2 has -30 degree ice, cup 3 has 5 degree water, cup 4 has 68 degree water, and cup 5 has-12 degree ice. Using the correct model
predict the final temperature of the mixed water. Show your math!

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