Gene is performing a lab activity. Part of the instructions for the activity are shown below. Determination of the Unknown 1. Place 25 mL solution 1 into a 50-mL flask. 2. Heat the flask on a hot plate over low heat for 5 min. 3. Add 10 drops of solution 2 to the flask and swirl to mix. 4. Remove the flask from the heat, let it cool, and filter the resulting solution.