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Lab #3 How Ironic! Exploration Problem: What mass of iron ingested by consuming breakfast cereal is considered the u.s. Recommended Daily Allowance? Materials: iron fortified breakfast cereal magnetic stirrer (optional) neodymium magnet Ziploc bag 1000 mL beaker glass stirring rod sensitive balance (0.01 grams) Hazard Warning: There are no hazards of usage or disposal of materials in this activity. Procedure: Iron is added to breakfast cereals as powder or filings and when ingested is dissolved in stomach acid. It is absorbed into the body as it moves through the inteE;tines. Cereal companies commonly advertise that one serving of their product provides 100% of the U.S. Food and Drug Administration1s dietary Recommended Daily Allowance of Iron. Your task in this activity is to experimentally determine what actual mass of iron represents the RDA. 1. 2. 3. 4. Place one serving of one of the iron fortified cereals available into a Ziploc bag and thoroughly crush the cereal. Pour the crushed cereal into a 1000 mL beaker and nearly fill with very hot water. place the beaker onto a heated, magnetic stirrer and drop in a neodymium magnet. Run the stirrer until the cereal is completely mushy. If no magnetic stirrer is available, stir the mixture with a glass rod for about 20 minutes. The neodymium magnet is strong enough to pull the iron out of the mixture once the coating on the flakes is dissolved. After carefully retrieving the magnet, remove the iron from the magnet, dry it, and mass it to find your experimental RDA. 1 Summing Up: Represent2. 1. Based on your work, what mass the RDA 2. List the results obtained for the different cereals. Which cereal contained the most iron per serving? If each cereal claims to provide one RDA, how do you account for any differences? 3. A standard paper clip is often given as an example of an object of mass 1 gram. How many bowls of the cereal you tested would- you have to eat in order to consume 1 gram of iron? 2