Chemical analysis shows that the oxygen-carrying protein hemoglobin is 0.34 percent Fe by mass. What is the minimum possible molar mass of hemoglobin? The actual molar mass of hemoglobin is about 65,000 g. How would you account for the discrepancy between your minimum value and the experimental value?
KEY Sections ON the Syllabus Sections NOT on the Syllabus CHEMISTRY IN FOCUS CHEM 100 CHAPTER 2 NOTES Introduction: In this chapter, you will learn how to use some chemists’ tools. Just as a carpenter learns to use a hammer and a screwdriver to build a cabinet, so you must learn to use the tools of measurement and problem solving to build chemical knowledge. 2.1 Curious about Oranges The importance of curiosity in science cannot be overstated. If early scientists had not cared about why matter is as it is, science would not exist. Therefore, as a student of science, the first tool you must develop is your curiosity. Suppose you become curious a