17. Repeat Steps 12 through 16 above for well #2 and well #3 and record your data under the Trial 1 column in the Data Table 1. 18. Wash the well plate immediately with liquid soap and dry the well plate thoroughly with paper towel and cotton swabs to remove any precipitate from the bottom of
Obtain an Erlenmeyer flask that has a vacuum opening and attach the vacuum tube to it 8. Insert funnel and rinse the funnel with distilled water 9. Turn vacuum on and pour the pink solution into the Erlenmeyer flask, the precipitate should stay on top of the filter 10. Rinse the beaker out until all residue is gone 11. Try to rinse the precipitate in the funnel until the pink color is gone 12.
Stir or shake the solution until it is dissolved. This will produce a 1% salt solution. 6. Pour the salt mixture into a clean glass just tall enough that the bottom of the paper can touch
Rinse the tube with distilled water several times. Add about 1 mL of the solution to be measured. Tilt and turn the cuvette so that the solution has contact with all the surfaces. Discard this solution and repeat this rinse once more. Fill the cuvette about 3/4 full of the solution you wish to test.
Place a 1.0 cm piece of magnesium ribbon (get from instructor) in a clean/dry test tube. Using a plastic pipette, carefully add 10 drops of 6.0 M or 3.0 M hydrochloric acid to the test tube. Record your observations. Make sure you feel the bottom of the test tube. 5a.
Pour the contents of one of the test tubes into the other and a reaction should occur and you should see a white precipitate of barium sulfate form. Then, centrifuge it for 1 minute. On the side, weight a boiling test tube containing 2 boiling chips. When the separation is complete, remove the small test tubes from the centrifuge and decant the supernatant into the boiling test tube. Add 1 mL of deionized water to the small test tube containing the precipitate and mix it and centrifuge it for 60 seconds.
The beaker was then moved to a stir plate with a stir bar and held in place by a ring stand. A funnel attached to an aspirator hose was fixed above to serve as a fume hood. With the aspirator and stir plate both on, 4.79 mL of 6 M HNO3 was added slowly to the beaker until the copper dissolved and the solution turned a light blue color. The hood could now be removed and 10.02 mL of distilled water was added to the solution. While stirring, 6 M NaOH was added drop-wise until the solution became basic, turning red litmus paper blue.
Using the measuring cup, add two cup of confectioner’s sugar into the pitcher as well. If you have doubt about how sweet you like your Kool-Aid, start with one cup of sugar and add more as needed, tasting with each addition. Now, with your long-handled spoon submersed in the pitcher of water, carefully stir until all of the Kool-Aid powder dissolves. Then, with your spoon filled with Kool-Aid, do a final taste
4) Ignoring step 3, after step 2, you can take the solution that you have created and pour it into a 100 mL beaker. Once the solution is in the beaker, turn on the conductivity tester and gently place it in the solution (try not to touch the bottom of the beaker). Record the results. 5) Now, take the beaker with the solution already inside and place it on a hot plate. Turn on the hot plate to a medium heat.
How Salty Does water have to be for the egg to float? Materials and Equipment * Bag of clear 16-oz. plastic cups * Table salt * Water * Measuring cup, liquid * Container, 1-quart (qt.) * Spoon for stirring * Eggs (5) Procedures 1. Take one egg out of the refrigerator and allow it to warm to room temperature.