Please read this entire module on UV-vis, paying particular attention to the explanation of Quantitative Analysis of Mixtures and The two-analyte Generalized Standard Addition Method (GSAM) . Let the questions below guide your attention. Please complete the following in your lab notebook and be prepared to discss these points with your TA: In writing, please explain the advantages to using multi-point calibration compared to single-point calibration . In writing, please explain the principle of standard addition and describe how it is different than a method using external calibration . Describe the context in which standard addition should be used as a calibration method and discuss the advantages of standard addition over other methods of analysis. Describe how you should choose appropriate wavelengths in the following scenarios: to quantitate a single component in a solution. to quantitate two components of a multi-component mixture. Describe GSAM and why it is useful to analyze a mixture of Co and Cr ions in an uncharacterized matrix. Prepare a Table in your notebook to record data (see the Procedure for an example). You were able to validate your calibration curve for the QUANT lab using a standard solution of known concentration. Is it possible to validate your GSAM calibration using known standards? If so, how?