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What is the number of atoms in 3.54 mol s

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

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?