Sodium hydroxide

Coulter Counter Method. Schematic Diagram Diagram 1: The basic setup of coulter counter method. Test tube containing conducting fluid placed in the beaker containing same conducting fluid. Orifice in the test tube connect the circuit. Electrodes are placed in beaker and test tube and voltage is applied. Vacuum is applied in the test tube to allow fluid movement from beaker to test tube. Counting circuit will calculate the amount of particle and pulse height analyser will measure the particle…

Freezing salt-water experiment Contents: Contents, introduction and literature review on page 1. Aim, hypothesis, variables, risk assessment, materials and method on page 2. Results on page 3. Discussion and conclusion on page 4. Introduction: I have decided to do my SRP on salt water freezing because our planet is 71% water and about 96.5% of it is in the ocean which it is salt water so this is why I was interested in seeing how much salt, depresses the water from freezing. Literature…

Adsorption isotherm models : To study the proper model, the isotherm data were analyzed and were fitted them into two models, Freundlich and Langmuir, because they are the most suitable and employed models. Equilibrium uptake of CV and MB was investigated with sorbent weight of 0.5 g of fennel seeds in contact with 100 mL of solutions and at pH 4 for CV and 6 for MB. The flasks were shaken at 200 rpm and the equilibrium concentration of the remaining CV and MB was determined by spectrometer.…

The beginning of the lab contained a substantial amount of information detailing what chemical properties make up the structure of a salt hydrate. It provided essential knowledge proceeding to the successful completion of this lab such as the idea that hydrates are salt compounds which have formed weak bonds to water molecules that can easily be broken through the use of heat. With this information in mind, it was expected that a series of procedural guidelines following this information be used…

this experiment was to reduce Camphor into Borneol and Isoborneol using Sodium Borohydride. In this reaction, Isoborneol was the major product while Borneol was the minor product. This is a reduction reaction, where the ketone on the Camphor is reduced to form two products with secondary alcohols. First, 0.25 grams of Camphor was obtained and added to a 50ml flask and mixed with 1.5 ml of methanol. Second, 0.25 grams of Sodium Borohydride was added to the reaction mixture and the reaction…

These first five questions were asked to test Kimora’s ability to create concrete operational thoughts. It was designed for her to use her classification skills to come up with the correct answer. Kimora answered all questions with confidence, but was unable to understand that one set of object could contain another. She was able to see all three smiles, and two sunglasses, but only two pictures therefore the amount of pictures and sunglasses were the same amount. The next activity was using 3…

In this investigation, the mass (g) of a beaker and a graduated cylinder were calculated and recorded into a lab notebook. The density of distilled water was calculated without any NaCl by measuring the mass of a sample of water in a beaker, and then subtracting the mass of the beaker to leave the mass of water. This measurement was recorded into a lab notebook in Table 1 under “Total Mass of Solution” and “Mass of solution”. The contents of the beaker are then transferred to a graduated…

Exp D. Post Lab Questions 1. What is the purpose of the concentrated sulfuric acid in the first step? The purpose of using concentrated sulfuric acid is to activate the reaction of salicylic acid and acetic anhydride and produce the acetylsalicylic acid, which is aspirin. The sulfuric acid is used to protonate oxygen atom of a carbonyl group of salicylic acid. 2. What would happen if the sulfuric acid were left out? Removal of catalytic acid from the reaction would slow down or not proceed…

REFLECTIONS FOR LAB 4- FRICTION Lab 4.1 to 4.3 is about all the different frictions. We did 3 different labs. 4.1 was pulling a block across different surfaces and finding the difference in friction. 4.2 was about pulling multiple blocks across different surfaces and finding the difference in friction. 4.3 was about pulling blocks but in a bigger surfaces area. In Lab 4.1 we had to pull different blocks across different surfaces. The surfaces were a tabletop, wax paper, paper towel, fine…

ways. It can cause the posterior pituitary to release its’ storage of antidiuretic hormone which causes water reabsorption in the kidneys. Second, it causes the adrenal cortex to secrete aldosterone which causes the kidneys to reabsorb sodium. Since water follows sodium, it causes more of it to increase blood…