Class - a question often asked, why do I need chemistry? You all have included insightful connections in your posts throughout the term, and so far this week. Let's take the opportunity look back at several concepts that we've explored over the term. Acids/bases, pH/pOH: You are given a solution to apply to the skin of a patient. The label says that it has a pH =1.0. Will you use this? You have the knowledge now to be able to ask a thoughtful question. You read a label and see the warning about mixing compounds - and what is unsafe. For example, you now know that bleach is NaClO, sodium hypochlorite, and its pH is very basic. You "google" information about mixing of certain chemicals; you now have the information to understand what you are reading Concentration Suppose that you need to use a saline solution (0.9% NaCl). Yet, the container you are given says that the concentration = 10M. With your knowledge, you know that something is wrong. You can also convert 0.9% to Molarity. Radioactivity and half-life Suppose that you read about a new type of internal radiation therapy being developed and the compound has a half-life of