1. A chemist takes a summer job in which he has to clean up a stockroom. He finds the following sitting in a hood: seven labels that have fallen off their bottles; five sealed bottles that contain solutions; and one bottle with the cap missing that has dried out and contains only a white solid. Each bottle holds about 250mL of solution. The labels contain the following information: To properly dispose of the chemicals, the chemist needs to identify a closely as possible the contents of each bottle. He labels the five bottles A through E and checks the pH of the solutions with a pH meter. He obtains the following data: The chemist also isolates the dry powder from the dried-up bottle and weighs it. The powder has a mass of 0.793g. (a) Use your knowledge of acids, bases, pH, and stoichiometry to identify the labels that should go on bottles A through E. (b) Which label should go on the bottle that was dried up? (c) Which label came from a bottle that is missing? (d) Is there a bottle or are there bottles that you cannot label with confidence? Provide calculations and explanations to support your answers