Leave the boiling tubes for 1 hour to allow the precipitate formed to
= 10^-3 M = 1,000 mL Here C1,C2; are the first and second concentrations of solution V1 and V2 ; are the required and current volumes. The impeller turned on and DDA, and tap water left to be mixed properly with water for 2 minutes. Approximately 150 grams of quartz added into the solution.
For this I needed to first obtain deionized water. I cleaned my large graduated cylinder and got 20 + or - 2 mL of deionized water. I then added this water to the beaker that contained the mixture I created from the last step of the experiment. I also gathered 2 boiling stones and added them to the mixture of the last step. I placed the beaker on a hot plate and heated it up to 130 degrees Celsius.
The Incredible Egg The purpose of this lab was to find out what would happen over time to weight of an egg after we scrubbed the eggshell off in a little spot. We then soaked it in water for 10 minutes, 30 minutes, 24 hours and measure how much the weight went up. Once we came back the next day we measured them after 24 hours. In the same day we put the syrup in the cup instead of water and we measured how much it weighed after 10 minutes, 30 minutes and 24 hours. As we did this with the water the weight of the egg went up because the water soaked into the egg and made it heavier.
Step 9. Increase concentration of sodium chloride up to 18.00 mM and repeat steps 3-5. Step 10. Replace 50 MWCO membrane with 100 MWCO membrane.
Move 10 ml of the fourth well to the fifth well. FIll the fifth well with 90 ml of dh20 to reach 100ml. Start with 1% solution for Fluoride 100 ml and move 10ml of the first well into the next. Fill the well with 90ml dh20 to reach 100ml. move 10 ml of the second well to the third well.
Put the filtered liquid back into the beaker, then, clean up the Buchner funnel and filter
Immediately 10 μL of double distilled water was added with a micropipette; this way our concentration of the treatment was the intended concentration.
Materials: • Baking Soda • Balance • Beaker • Evaporation Dish • Hot Plate • Tongs • Spatula • Weigh Dish Procedure: Begin by measuring the mass of the empty beaker. Then, place 2.00 grams of baking soda into the empty beaker. Using the tongs put the beaker filled with 2.00 grams of baking soda onto the hot plate. The beaker needs to be heated for about ten minutes. Remove any clumps throughout the ten minutes with the spatula.
Tube 1 had 1 drop, tube 2 had 2, and each tube after had an additional drop until tube 5. Next, deionized water was placed in each tube. Tube one had 4 drops; tube 2 had 3 drops and the pattern continued until tube 5. After each tube was filled with the glucose and deionized water, the contents were mixed and centrifuged. After the tubes were centrifuged, any pellets formed during the process were removed.
We used a Buchner funnel to collect benzocaine. We used three 10 ml of water to wash the product. After the product was dry, we weighed, calculate the percent yield and determined the melting point of the product.
Joshua Miller 12/18/17 Fermentation Lab report Introduction The term fermentation refers to the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat (wikipedia). Sugars are converted to ethyl alcohol when fermentation happens. In this experiment we determined if yeast cells undergo fermentation when placed in a closed flask with no oxygen. Glucose and yeast are mixed together in a closed flask and allowed to incubate for about one hour.
After gathering all of the materials, the experiment can begin. Prepare the distillation set-up similarly to Figure 1[2] and make sure that all of the appropriate areas are secured together with masking tape. In the 250mL round bottom distillation flask, carefully pour in 25mL of the alcoholic bevarage and place in one or two pieces of boiling chips. Now, the students have the option of dyeing the beverage with a tiny drop of food coloring.
Again select the flask and select Distillation Head from the drop down menu. ➢ For the third time select the flask and choose Condenser from Distillation from the menu and for last time select the flask Distillation Take-off from the dropdown option. ➢ Select the 100 mL Graduated Cylinder from the Equipment option and put it underneath of distillation take-off.
If impure, preform recrystallization procedure to remove the impurities. Then calculate Percent Recovered on crystals formed, and preform melting point procedure. 2. You find that a solid substance you are trying to purify is very soluble in ethanol, but not very soluble in water. You decide that you are going to try to recrystallize it from a solvent pair, consisting of ethanol and water.
