Diethyl-2 Lab Report

The concentrations and absorbances of the red and blue dyes were used to find the concentration of the purple dyes. From the graph of the blue dye, the linear equation for absorbance was y = mx + b. From that formula came the equation y = 7.915 x 104 (x) + 0.02489, where y represents absorbance, m is slope, x is concentration/molarity, and b is the constant/y-intercept. The same set up was performed for the red dye, but the equation produced was y = 1.045 x 104 (x) +.001298. The equations found when graphing absorbance vs. concentration were used to find the concentration of the purple dyes. The absorbance for purple dye 3 on the red wavelength of 470 nm equaled 0.149 and 0.818 for the blue wavelength of 635 nm. For purple dye 1

The purpose of this experiment was to determine the relationship between tail spine length and hemoglobin levels as well as the relationship between tail spine length and heart rate. The concentration of the hemoglobin in Daphnia is dependent on the oxygen available to them.

baseline (see Figure 9.4 on page 288 for help). If the solvent traveled 57 mm

Discussion As part of the experiment, the percent composition of each component of the mixture was calculated. 51% of the components were retrieved from filtration while 49% of the solvents were retrieved from dissolving the components in a solvent. The original mixture was one globular solid-like structure.

Station one: Station one shows that when a small piece of magnesium metal is placed over the flame of the Bunsen burner, the magnesium metal ignites, giving off a bright, white light. Once the flame has extinguished itself due to the lack of fuel, the magnesium metal turned from a metallic strip to a crumbled white powder. It can be decided that station one is a combination (redox) reaction, as a new product is synthesised by the combination of two reactants. The reactants, magnesium and oxygen gas in the air bonded together to form the product of magnesium oxide.

Catechin-Cu nanoparticles were synthesized through an ultrasonic crushing method, as schematically depicted in Fig. 9, the major steps involved in producing Catechin-Cu nanoparticles. In a typical procedure, a solution containing 9 mL alcohol was prepared, in which a desired amount of Poly Vinyl Pyrrolidone (PVP) (Mw = 1,300,000) was dissolved with magnetic stirring, at room temperature, for 2 h. The concentration of PVP was 9% by weight, followed by addition of 1 ml of mixed solution containing Catechin and cupric nitrate with molar ratios 1:2. In this method, both the cathchin and cupric nitrate were mixed in a mutually dissolving solvent, which was removed by evaporation to produce a film, and then reconstituted in a buffer solution medium

Your metabolism is the result of the processes that are in your body and working together to create energy for your body that keeps you going day to day. Your metabolism is also the rate that your body’s many processes function and your metabolism can be high, low or even in the middle. When talking about your metabolism there are two different types of reactions and they are called a catabolic reaction and an anabolic reaction. A catabolic reaction is when your metabolism breaks down the nutrient molecules from the food you eat and it releases useable energy into your body. Anabolic reaction is when chemical reactions in your body use energy through catabolism to construct the molecules that make up your body.

The infill brick walls of Specimen 5 were produced by the small windows opening. These window openings were shifted to the side of the one column at stories. Until the end of the experiment, 9 hysteresis cycles were applied to Specimen 5 at both forward and backward. Specimen 5 reached 9.14 kN lateral force and +7.56 mm displacement at 4 hysteresis forward cycle and -19.31 kN lateral force and -21.51 mm displacement at 8 hysteresis backward cycle. When Specimen 5 reached to ultimate lateral load-carrying capacity, interstory drift value was 0.7% at forward and interstory drift value was 3% at backward. Load controlled program and base shear versus second story displacement hysteresis curve of Specimen 5 are shown in Fig. 14.

Methods and Materials 0.3g methyl benzoate and 0.6ml sulfuric acid were added into a small test tube in an ice bath. A mixture of 0.2ml sulfuric acid and 0.4ml nitric acid was then added to methyl benzoate solution. The contents were mixed thoroughly and then allowed to sit in the ice bath for another 5 minutes. The test tube then put in a drying rack for 15 minutes. After the 15 minutes, the reaction was poured into a 25ml Erlenmeyer flask with 2 small ice chips in it.

Biochemistry is the study of chemical processes within and relating to living organisms. Amino acids play an important role in biochemistry because amino acids are found in living organisms in both their free forms and bound by amide linkages in peptides and proteins. Amino acids may either be regarded as the components which are found in proteins as they emerge from the ribosome or alternatively they may be considered as the components found in proteins which are sufficient age for post-ribosomal modification of some residues to have taken place.

As with the yellow dye, it was observed that there was no connection to be made between the absorption and the wavelength. Nevertheless, it was identified that the statistics we received regarding our wavelength did not emulate that which was found with many of the other groups during the experiment. Our wavelength remained consistent throughout the dilution of the substance, while others found that the wavelength decreased as did the concentration of their solution. This brings up the question of whether diluting a substance will affect the wavelength at which it will reach its peak absorption. It has already been concluded that concentration and absorption are inversely proportional, but the relationship the wavelength is intended to have is not addresses.

The stock solution stability of leuprolide and the IS was evaluated at −20 °C for a month. The bench-top and long-term stability were evaluated to determine the stability of leuprolide in plasma samples under different conditions including bench-top stability, processed sample stability, and freeze-thaw stability. All the stability tests were performed using QC samples at two different concentrations: low (60 pg/mL) and high (8000 pg/mL). The bench-top stability was conducted using QC samples at room temperature for 12 h. The long-term stability was evaluated after the storage of the samples at −80 °C for three months. The processed sample stability was evaluated by analyzing the extracted samples in the sample injector at

An analytical wavelength was the wavelength at which a color of the visible light spectrum will experience the strongest absorption, and the less diluted solutions with higher concentrations will absorb more of the transmitted light. Once the B1 and R3 dyes have their absorbencies calculated, the experiments can then attempt to answer the guiding question, “how could you make 1-L of Pirate-Purple dye solution?” The guiding question was related to the background information because the background information was necessary to use absorbency and molarity to understand how to make 1-L of Pirate-Purple dye solution. Absorbency can be used to find molarity by using an equation for the slope of a graph made during the pre-lab which describes the relationship between concentration and absorbency, the equation was ( y=m(x)+b). In the equation,

In this lab, nerolin, or 2-ethoxynaphthalene, was formed from 2-naphthol using a Williamson ether synthesis. This technique uses an alcohol to form an ether from an alkyl halide through an SN2 reaction.

As part of my module Nip1002 I was required to perform a set of observational skills which included; pulse, blood pressure, respirations, hand washing and urinalysis and then compare them to previous results. In this lab report I am going to discuss blood pressure in detail.