Areef may lose its color due to bleaching

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Classify this reaction: 2al+n2-> aln.