PH

Results The results obtained were statistically analyzed using the Fishers exact test. Table 1: Comparison of microbial growth between different groups Sodium Hypochloride Total Fishers exact test Endovac Laser Control p-value No Growth 5(50.0%) 8(80.0%) 0 15(37.5%) <0.001* <103 5(50.0%) 2(20.0%) 0 7(17.5%) 103 – 108 0 0 0 8(20.0%) >108 0 0 10(100.0%) 10(25.0%) Total 10 10 10 40(100.0%) *p<0.05 statistically significant p>0.05 non significant, NS Amongst the 10…

Characteristics Table 4 gives the information about the experiments that involved chemical performances in both lakes. By trying the solutions and comparing the results that students got form then lakes, it was demonstrated that Lake Evelyn had the highest pH and second place in alkalinity. Because of these two factors, Lake Evelyn and the highest strength of 220 mg / L. Wakefield demonstrated any phosphoric level, which confirms the value of TSI that predicts that is a eutrophic lake. Either…

Brønsted–Lowry Left hand side: Johannes Nicolaus Brønsted (1879 - 1947) Right hand side: Thomas Martin Lowry (1874 - 1936) THEORY An acid is a proton (H+) donor A base is a proton (H+) acceptor EXPLANATION OF THE THEORY: Acids are proton donors and bases are proton acceptors. A hydrogen ion is the same thing as a proton since hydrogen consists of a proton and an electron. When hydrogen loses an electron all that is left is a proton. According to the Brønsted-Lowry theory of acids and…

The Effect of Decreased Amounts of DOPA on the Production of Dopachrome Intro Enzymes are a catalyst, typically a protein, that affects the rate of a chemical reaction. They allow these complex reactions to occur at a low temperature with less energy usage. In enzyme-catalyzed reactions, a substrate, the substance to be acted upon, binds to the active site on an enzyme to form the product. The active site is the only part of the enzyme that reacts with the substrate. For the substrate to become…

Fruit Spoilage Lab Abstract: The purpose of this lab is to see if lemon juice has an effect on fruit turning brown. When fruit is exposed to the air, it turns brown so the target of the lab was to try and prevent discoloration of the fruit. Using lemon juice and water, apples and bananas were tested to find if the chemicals really did prevent brown coloring from appearing on the fruit. With the lemon juice as the independent variable and the apples and bananas as the dependent variable, the…

This experiment was conducted to practice a variety of techniques in organic chemistry: separation, mechanisms, acid-base reactions, evaporation, recrystallization, and identification. The goal of this experiment was to identify the unknown mixture of two compounds. The two compounds were separated first by altering the acid components solubility through deprotonation, and then protonating the acid component again to form the separated precipitate. The ether in the neutral layer was evaporated,…

microorganism strains and re-test it to ensure that we can get an accurate and reliable result. Besides that, the parameter and standardization of disc diffusion method procedure should be followed to get the accurate and reproducible results. For example, the pH of the Mueller-Hinton agar should be maintained in the range of 7.2 -7.4 and keep it in room temperature after gelling. Otherwise, some antimicrobials will appear to lose potency while other agents may appear to have excessive activity.…

1. The pH of Welch’s Juice Significantly different than what I had hypothesized. I reject that part of my hypothesis because I feel like it was too far from what the actual number was. I had hypothesized 6 because I felt like the other parts of that solution would make it less acidic. I was wrong and the actual number was 3. On the other solutions I was exactly on or off by one number. 2. The pH range of my solutions were from 2.5-7.The most acidic solution I had was vinegar which had a pH of…

This can be controlled by a number of factors. Factors such as adding pH buffers, salt forms etc. (6)Suspensions should also be palatable. This is an important factor for this formulation especially as it is to be dispensed to children. Children prefer sweet tasting products. Often the taste of a drug 'is more noticeable…

Titration is used to determine the equivalence point of a reaction, or the point when the moles of acid are equal to the moles of base in a mixture. Titration is used to determine the concentration of an unknown solution by using an already known solution. This process is important because it is commonly in the medical field. For example, pharmacists use titration in the creation of drugs. In addition, doctors also titration when determining the concentration necessary to give their patients of…