Why is it useful to use moles to measure chemical quantities?

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?

Based on its chemical properties, identify the position of each chemical family on the periodic table.

‘which reaction would most likely require the use of an inert electrode?