CHM-201 Lab 3 Rev1-012-171 Questions: 1. This experiment depends on the accuracy of the masses used. Give at least one reason why the mass could be lower than expected and one reason why the mass could be higher than expected. Which of these cases do you think best represents your results? (6 points). 2. Write balanced chemical equations for the following reactions (you will need to review the information provided in the introduction to this laboratory for the formulas involved; remember that oxygen is O2 and nitrogen is N2): (12 points) a. The reaction of magnesium with nitrogen b. The reaction of magnesium nitride with water c. The reaction of magnesium hydroxide when heated CH-201 Lab 3 Rev1-C12-17 3. What is the most economical method of obtaining pure magnesium? (4 points) Page 7 of 8 4. What is the active ingredient in "Milk of Magnesia" and describe why it is effective to treat acid indigestion. (4 points) 5. What is the hottest part of a Bunsen burner flame when the natural gas is efficiently mixed with air? What was the first name of the person who invented the Bunsen burner?