For figure 4a that relationship is not linear, R2 = 0.64 and 0.39 respectively. Although if 10 mM is removed from the equation, R2 values of 0.997 and 0.997 can be found. This helps prove that there is a relationship between the concentration and current. Table 2b. Data for determining the concentration of the unknown ferricyanide solution Peak Current (A) Calibration Line Cathodic 3.00E-5 y = 6.00E-6x 1.00E-6 Anodic 2.15E-5 y = 5.00E-6x 1.00E-6 Calculation 3: Cathodic scan of unknown concentration X=(3.00E^(-5)+1.00E^(-5))/(4.00E^(-6) )= 10mM For Table 2a, the value for the cathode unknown is 10 mM while the anode is 1.53 mM.
From the structural units view the introduction of MoO3 into composition converts symmetric BO3 triangles into BO4 tetrahedral or converts the latter into asymmetric BO3 triangles. Both the BO4 tetrahedral and asymmetric BO3 triangles are considerably denser than the symmetric BO3 triangles.  The average boron-boron separation (-- removed HTML --) calculated according the relation [19,
The different possible substrates for avocado catechol oxidase have very different Km’s and Vmax’s (Table 1). The Km’s range from 0.7 to 95, and the Vmax’s range from 0.58 x 105 to 17 x 105. The enzyme’s own substrates catechol has a Km of 6.5 and a Vmax of 5.4 x 105. Some of the substrates are better suited for catechol oxidase than others. For example, dopamine has a Km of 95 and a Vmax of 11 x 105.
The TSI is used to observe the slant and butt of the tube as well as to identify if gas was present and if the organism produced hydrogen sulfide. The Another medium used was MAC, it is used to isolate and differentiate gram-negative organisms and it is a pink, dusty rose color. Lastly, the Citrate Slant is a green color and it was used as a differential test to examine enzymes. The media were inoculated at 37°C for 48 hours, then it was observed to determine the
E. Discussion: In order to synthesize the polymer, Nylon 6,10, we had to complete a few steps to create the chemical reaction that combined sebacoyl chloride and hexamethylenediamine. First we measured the mass of the two graduated cylinders when they were empty, and measured it again after they were filled with sebacoyl chloride and hexamethylenediamine. We did this in order to find the measurements of the reactants. When we measured the graduated cylinder when they were emptied, one weighed at 10.99 grams while the other weighed at 10.94 grams. Even though they were the same kind of cylinder, I believe that a systematic error might have caused the second cylinder’s weight to be slightly affected, causing the weight to be lowered by 0.05 grams.
The concentration of para-nitrophenol (pNP) was then quantified, following the procedure below. The solution at 33 degrees celcius was also tested to act as a negative control sample. A standard curve for pNP concentration was generated using 3ml of 0.0, 0.1, 0.5 and 1.0 mM, recording absorbance at a wavelength of 410 nm using a spectrophotometer (SpectrovisPlus Vernier). The absorbance of experimental samples was determined in an identical manner and then converted into concentration values via the standard curve. The relative enzyme activities were calculated as μmoles pNPP/minute and analyzed via a students’ T-test (Microsoft Excel 2010, Microsoft, Redmond, WA,
Later, he became a “Founding Father” of cyclodextrin chemistry [2-4]. During the study, he found that the crystalline dextrins formed two different types polymer after addition of iodine solution. After the reaction, he distinguished the polymers and named as crystalline dextrin A, which gives a thin layer of the blue when damp and gray-green when dry. The dextrin-iodine complex which
Firstly, 39.15 g of water was used and molar mass of metal was determined to be 61.43 g/mol, then 50.88 g of water was used and molar mass of metal was determined to be 59.24 g/mol. If the amount of water in the calorimeter varies, and thus the heat capacity of the water would vary. Firstly, specific heat capacity of metal was determined, which depends on heat of the water mass of the water and mass of the solid, then molar mass using: MM= 25/(S.H. (J/(g℃)) ) In the Part B of the experiment q_(H_2 O) for the reaction was find to be 2279.5 joules, ∆H for the reaction = -2279.5 joules, ∆Hsolution = -455.9 joules/g. This solution reaction is exothermic; because temperature was increased meaning heat was released.
Three alloys were prepared having 2.5, 3.0 and 3.5 weight percent silver designated as hypo-eutectic, eutectic and hyper-eutectic alloys, respectively. To replenish indium losses during alloy making, a 1.5% allowance was added for charge calculations. The alloy making sequence was as follows: first pre-weighed indium shots were placed in an alumina crucible and heated to 165 °C. After complete melting of indium, pre-weighed silver filings were added in the melt and stirred with stainless steel spatula. The temperature of the melt was raised to 185 °C and the melt was kept on stirring for 10 minutes.
The Krebs cycle also occurs in the mitochondria but this time in the mitochondrion matrix. The first step of this phase is taking the product from the last phase, the acetyl-CoA, and combining it with a 4 carbon molecule giving you a 6 carbon molecule called citric acid. The citric acid cycle turns once for every molecule of pyruvate so all the inputs from here on out should be multiplied by two for your final count. After the citric acid is formed three NAD+ molecules come in and take their standard two electrons and one hydrogen ion for every molecule and give you three molecules of NADH. While that is occurring two molecules of carbon dioxide are released, and one ADP molecule gets a phosphate group added to it synthesizing one ATP molecule.