Essay Explain Which Steps In The Procedure To Reduce The Final Yield

The first experiment begun by filling a 600-ml beaker, almost to the top, with water. Next, a 10-ml graduated cylinder was filled to the top with water. Once water was added to the beaker and graduated cylinder, a thumb was placed over the top of the graduated cylinder. This would ensure that no water was let out and no bubbles were let into the graduated cylinder. Next, it was turned upside down and fully submerged into the beaker. Then, a U-shaped glass tube was attained. The short end of the glass tube was placed into the beaker with the tip inside of the graduated cylinder. Next, a 50-ml Erlenmeyer flask was received. After, 10-ml of substrate concentration and 10-ml of catalase/buffer solution were placed into the flask. A rubber stopper was then placed on the opening of the flask. After adding these, the flask was held at the neck and spun softly

2. Why is it important to stir the solution in the flask as you add titrant from the buret?

For the first procedure the student put 5ml of distilled water in to a test tube then picked up one filter paper and placed it in a dish. The 5ml of distilled water was then dropped on to the filter paper. The student then grabbed alcohol for its habitat solution, and placed 5 ml of alcohol in to another test tube, and placed a new filter paper in to another clean dish. The 5ml of alcohol was then dropped on to the filter paper. Once both filter papers were submersed in the proper liquid then they were taken out of the dish and out in to individual chambers that had a connection. On the left hand side was the water filter paper and on the right hand side the alcohol filter paper. The second procedure was to grab ten pill bugs and gently place them in to the alcohol and water chamber.

It used mass, temperature, length, volume, density, and making a dilute solution. I learned the importance as well as the difficulty of making proper measurements in a lab setting. If one measurement is off, it will throw the entire equation off. This will give either incorrect or inaccurate results.

When filling up the burette it is important that a funnel is used, however as the solution reaches the 0 mark it is ideal that the funnel be removed and a pipette used instead to reach the 0 mark, this is to achieve greater precision. During the experiment, it is important to swirl the flask continuously with one hand

When conducting the experiment the results for each alcohol were where they were anticipated to be supporting the

Now that the product claim, healthcare market, and product has been established, it’s important to interpret the steps found previously to the vaccination patch. In doing so, this will establish the roles of each management team as well as vision of the product. This clear and concise strategy will be utilized to help receive sponsors. It includes the exact outline of the path needed in order for the product to be successful. This includes the company executives, investors, scientists, the project manager, and medical professionals as it requires various aspects of the company in order to produce the vaccination patch. More specifically, the vaccination patch will include the requirements of developing the vaccination patch in not only the United States but also in other countries as well. This further enable options such as distribution channels focused on meeting needs of those in underdeveloped countries. This is a 3-4 month time frame is as every detail must be accounted for in precision.

A 10 mL round-bottom flask was weighed both before and after approximately 1.5 mL of the given alcohol, 4-methyl-2-pentanol, was added. 3 mL of glacial acetic acid, one boiling chip, and 2-3 drops of concentrated sulfuric acid were added to the flask in that order. The reflux apparatus was assembled, the

The next lab session I measured out 3mL of ethanol with a glass pipet and added it to the crude trimyristin in the round bottom flask. I got a 250mL beaker, filled it half way with water and placed the flask in it and heated the beaker with the flask on a hot plate until all the solid dissolved and then let it cool to room temperature.

The next step in this lab is to rinse the Erlenmeyer flask with distilled water down the drain and then repeat the experiment, this time adding 10 ml of 0.10M KI and 10 ml of distilled water to the flask instead. The flask should again be swirling to allow the solution to succumb to the same temperature as the water bath and once it has reached the same temperature, 10 ml of 3% H2O2 must then be added and a stopper must be immediately placed on the flask and recording should then begin for experiment two. After recording the times, the Erlenmeyer flask must then be rinsed again with distilled water down the drain. After rinsing the flask, the last part of the lab can now be performed. Experiment three is performed the same way, but instead, 20 ml of 0.10 ml M KI and 5 ml of distilled water will be added and after the swirling of the flask, 5 ml of 3% H2O2 will be added. After the times have been recorded, data collection should now be complete.

In Chemistry, when a student conducts their experiment and is asked to calculate the percent yield for their reaction it may be possible that they can get either a low percentage yield or a high one even above 100%. The first thing they need to understand what a percent yield is to begin with. A percent yield is calculated to be the experimental yield divided by theoretical yield multiplied by 100, basically it is the total amount of product that could be created in a reaction, calculated referring to the beginning amount of the limiting reagent. The question here is if this is the result of a violation of the law of conservation of matter?

Collect to 2 large beakers both large beakers are to be filled with hot water (labtutor). Then obtain seven conical tubes these will be used to collect the levels of gas, you will also need test tube a stopper and a plastic tube (labtutor). You want to fill the conical tube to at least 50 ml of water (Cressy). Take the four conical tubes filled with water and place two in each beaker, to do this you must invert the tube and cover the release hole as to not lose any water (Cressy). Then place the beakers with the tubes in the bath so they can be at the same temperature as the bath (Cressy). Next mark all of your test tubes in number order to be sure which tube contains what concentrations and pH (Cressy). Having mixed a solution to the specifications of 2.5 ml of glucose in all tubes, 3 ml of yeast in 2 tubes of pH 5, 2 tubes of pH 9, and the single pH 7 tube, the remaining two tubes will contain no yeast as they will be negative controls. Next add 2 ml of pH buffer 3 tubes will receive pH of 5, three will receive a pH of 9 and a single tube of pH 7. Finally add pure water to make sure all test tubes have 10 ml of solution. When making the solutions

One obstacle that I found my project had was the fact that we were so used to only doing the experiment on one person at a time so at first when 6 people came up all together it was a little bit overwhelming to carry out the experiment but they were some friends from my other school so it helped take the pressure off and we were able to do the experiment with them. Of course other people that we didn't know came up to our exhibit and it honestly went pretty well for the most part. Other than the fact that pouring the alcohol into the peoples mixtures took a little it longer than it should. Once this was all done later on that day we worked on solutions that might be able to help us make our project go smoother. We hope to at least have thing's pre measured so that people can just combine them while they are at our station, but we will see how this

After 30 seconds the same enzyme volume was added to the second flask. This was continued to the third, fourth and fifth flasks with interval of 30 seconds until the final addition occurred at 2.5 minutes.

1. Step six in the procedure is necessary because there maybe some left over solution left over in the filter and so we use the water to get rid of that excess solution which is leftover. Step six is also important because this 5 mL of water could make the left over precipitate release excess water in it making it so that the drying process is quicker.