Chemical Reactions Lab Essay

If a quantitative solution needs to be prepared, there are a series of steps that must be followed in order to get accurate answers. there are several objects needed to prepare it, including a 500 ml graduated cylinder, deionized water, and sodium phosphate dodecahydrate as the aqueous solution. The first step is to find the mass of the solution, sodium phosphate. In the formula, sodium's atomic mass is multiplied by 3 because there is the original weight times 3 atoms of sodium in the formula.…

The sequence of the reactions employed for the construction of novel indole–benzimidazole-based 1,2,3-triazole hybrids is demonstrated in Scheme 1. Compound 2 was prepared by treating propargyl bromide with 1H-indole-3-carbaldehyde (1) in presence of potassium carbonate in dry acetone at reflux temperature [26]. Compound 2 was further reacted by heating at reflux temperature with o-phenylenediamine (OPDA) in chloroform for 6 h afforded compound 3. Compound 3 coupled with variously substituted…

This Density of Copper lab was an experiment, which helped to show how to calculate the density of copper while comparing the results of the density of water. While doing this experiment we had to remember the density of water, which is 1g/cm3. However, before trying to find the density we needed to make sure we had the mass and volume. We were given two ways to help find the density of copper and a beaker. I had to first measure the mass of the copper by picking it up and gently placing it in…

The control was the first row for both amylases. At 0 min. neither one had synthesized anything so this served as the starting point. The independent variable was the temperature; this is what was being changed. The dependent variable was the amylase activity; this is what (should have) changed because of the temperature. The iodine was a marker. It showed whether starch was still present in the wells. From the results, starch was present in all the wells; it was present at every temperature and…

have shown inconsistencies within the data. This is evidently shown in figure 2, where the reaction rate at 2°C was 88 mL/min, whereas the reaction rate at 32°C was 83.5 mL/min. The reaction rate was lower at 32°C compared to 2°C which is biologically incorrect. As the optimum temperature of an enzyme is 37°C, the closest temperature recorded to that temperature was 32°C. At this temperature, the reaction rate decreased instead of gradually increasing. This shows that the catalase performed best…

Introduction:The objective throughout the semipermeable membrane experiment was to test the permeability of the caterpillar's intestine. Through this experiment one would be able to observe a transverse of small molecules through the cell membrane. Question: Were starch and Lugol’s molecules able to cross the membrane? Hypothesis: If there is a presence of glucose among the fluids in between the intestine and circulatory system then there is to be a breakdown of starch molecules within the…

is to produce propylene glycol using water and propylene glycol as a reactant to synthesis propylene glycol. The purpose of doing this experiment is to converge and install a conversion reactor, and also to simulate a process having separation and reaction using i-con software. UNIQUAC fluid package is used in this properties package list. The feed stream used in here is 3850kg /h which is propylene oxide and a stream of water feed of about 4890kg/h. Figure1: - Proses Flow Diagram Production…

Who will use the Thermoller? People that loves playing sports in hot weathers. People from places that is hot. This device is mainly foe emergency use and can cool water in a situation where there is no ice. This can also be used to carry food around, keeping them hot or cold the way a thermos does. How does the Thermoller work? The Thermoller is activated by water. The packaging will include a funnel for using purposes (it will also include a bag that you can carry the Thermoller in). When you…

The production rate of S2O32- when SoxF metabolized sulfide was similar to that of the wild strain C. pinatubonensis JMP134 (Fig. 2), indicated that knockout of SoxF did not affect the function of the SQR/PDO/ST system. In addition, the double knockout strain CpSQR&SoxF produced almost the same amount of S2O32- and SO42- compared with CpSQR (Fig.S3), which also showed that SoxF did not participated in the oxidation of sulfide. Interestingly, the re-consumption rate of S2O32- (Fig. 2, F),…

Homeostasis is the existence and maintenance of a relatively constant environment within the body. To achieve homeostasis, the body must actively regulate conditions that are constantly changing. As our bodies undergo their everyday processes, we are continuously exposed to new conditions. We call these conditions variables. One variable familiar to all of us is body temperature. Body temperature is a variable that can increase in a hot environment or decrease in a cold one. The organ systems…