Why is it correct to say that seawater is a mixture

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?

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false