94.3 g of bef2 were dissolved in 136.1 g of ethanol. use the table at the back of the exam to calculate the freezing point and boiling point of the resulting solution.

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

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

The sum of the oxidation numbers in a neutral compound is always