In one or two sentences, explain why the combined weight of several liquids mixed in an open flask can be less than but never more than the sum of all the weights of the ingredients.(2 points)
The combined weight of several liquids mixed in an open flask can be less than the sum of all the weights of the ingredients because the liquids may have different densities causing them to mix unevenly, creating pockets of less dense liquid. The combined weight can never be more than the sum of all the weights of the ingredients because mass is conserved during the mixing process, meaning no mass is added or lost, only redistributed.
