Students conducted the following experiment: Procedure: 1. Cut off a piece of steel wool as indicated by the teacher’s example. 2. Wring out any excess vinegar. 3. Describe the appearance of the steel wool in the data table. 4. Place the steel wool into the flask and cover the opening of the flask with the balloon. 5. Label your flask. 6. Find the mass of the system (flask, steel wool, balloon) and record the mass in the data table. 7. Allow the system to remain untouched for 24 hours. 24 hours later: The student data can be seen in the table above. The equation for this reaction is 2Fe + O2 → 2FeO Did this experiment obey the law of conservation of matter? Label the diagram below to show that it did.