For every 20 drops of solution you will add 0.1g of zinc to the new test tube. Repeat steps 3 and four until the solution is clear. If there ever exists too little of the solution to get enough drops, add up to 1mL of distilled water to the solution. 4. Once the solution is clear, retrieve at least ten drops of the solution and place them in a new test tube.
2 minutes later, add the shrimp. Cook for 4 more minutes, then drain liquid from pot and pour contents over a clean, unused large garbage bag or newspapers. Serve with melted butter and
All of the above. Question 7 (Multiple Choice Worth 1 points) The label on orange juice states the serving size is 1 cup. If 2 cups are taken in, which of the following is true? The calories double Nutrient percentages double The suggested minimum number of servings from the food pyramid is met All of the above Question 8 (Multiple Choice Worth 1 points) How many servings of the vegetable group should you have each day? 3-4 cups 2-3 ounces 2 1/2 - 3 cups 3-4 ounces Question 9 (Multiple Choice Worth 1 points) Which one of these breakfast choices is not a healthy choice as you run out the door?
The other lab partner should add the 20 mL water to the 100 mL beaker and stir for one minute. 19. Measure another 20 mL water using the graduated cylinder. 20. Add another 20 mL water to the 100 mL beaker and stir for one minute.
Procedure: 1. Fill a beaker two-thirds full of water and add approximately 20 drops of IKI. Write down the solution's color and record the mass of the bag. 2. Do an initial Benedict's test on the 15% glucose/1% starch and the beaker solutions for glucose by putting some of the solution and a roughly equal amount of blue Benedict's solution in a test tube, placing the test tube in boiling water for 90 seconds, and observing whether or not the solution changes color from blue.
Add 10 ml of ph 10 buffer to the same Erienmeyer flask. Start swirling immediately to dissolve, 7. Add 15 ml of water next. Use a squeeze bottle so you can wash the inside walls of the flask. 8.
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.
Then I filled the well starting with well #1 with distilled water using the fine point pipet according to the instructions on the data table in exercise two. I continued filling each well with the proper number of drops of distilled water up to #10 which was 0. Then I used the fine pipet to fill the wells with the proper number of drops according to the data table in exercise two starting
Transfer the distillate via Pasteur pipet into a 15-mL centrifuge tube. Wash the distillate with two 2.5-mL portions of water, removing and setting aside the water layer at each step. Transfer the organic material to a small, dry Erlenmeyer flask, leaving behind the last drops of the water layer. Remove any drops of water that were accidentally transferred to the Erlenmeyer flask, if any, then add small amounts of anhydrous sodium sulfate as drying reagent. When the liquid is dry, it will be transparent and some of the drying agent will flow freely like beach sand.
Then again, while leaving behind as much solid as possible, transfer as much liquid as possible into a pressure filtration assembly (p. 68 lab text) and filter the liquid into a clean, dry, tared 25 mL Erlenmeyer flask (tared = weighed empty). Be sure that the filter assembly is resting in the flask prior to transferring the liquid, as some liquid will filter through immediately. The filtration apparatus is made by pushing the micro Buchner funnel (polyethylene frit in place - no filter paper) into the end of a plastic pipet which has had the tip cut off and which has had a small hole cut into the squeeze bulb). Allow most of the liquid to filter by gravity, then, while holding your thumb over the hole in the squeeze bulb, gently apply pressure to complete the filtration. Care must be taken when squeezing the pipet bulb on the filter pipet.