From the bromination of 0.05g aniline, 0.156g of the product was collected. The percent yield was calculated to be 88.1%. Some amount of the product was lost when transferring the product from the Buchner funnel to the balance to measure its mass. To ensure the formation of the desired product, melting point of the product was measured to be 119.8-121.90c, which is in the range of the normal melting point of 2,4,6-tribromoanilne, 120-1220c. Thus, the product was indeed
The experimental Ksp at 291.15 K was found to be 7.10 x 10-4 + 5 x 10-6 and compared to the literature value of 3.8 x 10-4. Since ΔH° reaction and ΔS° reaction was assumed to be nearly independent of temperature, the change in enthalpy and entropy of the reaction was found using the gradient and intercept respectively of the linear plot of lnKsp versus the reciprocal of temperature. Using van’t Hoff equation, ΔH° reaction and ΔS° reaction was found to be 44 ± 1.3 kJ K-1 mol-1 and 89 ± 4 J K-1 mol-1
Based on the stoichiometric, the theoretical yield, actual yield and percent yield can be determined. In order to calculate the percent yield, the value for theoretical yield is required. Percent yield is determined by diving the actual yield by theoretical yield and multiplying by 100. The theoretical. The theoretical yield for Zinc Sulfide is 0.49 grams but the actual yield is 0.38 grams.
Experimental Viscosities in cP of 65 wt% Sucrose and 30 wt% Sucrose Solutions at Tested Temperatures in ˚C Compared to Literature Values of Viscosity in cP with Percent Error Concentration of Sucrose (% weight) Temperature of Solution (˚C) Average Viscosity of Sucrose Solutions Calculated (cP) Literature Value of Viscosity of Sucrose Solutions (cP) % error 65 20.7 138.67 147.2 5.79 65 40 42.88 44.36 3.34 65 60 18.31 17.9 2.29 30 20.7 2.9376 3.187 7.83 30 40 1.999 1.833 9.06 30 60 1.239 1.2 3.25 The graph of the viscosities at the tested temperatures for the 30 wt% sucrose solution can be seen in Figure 1. The graph of the viscosities at the tested temperatures for the 65 wt% sucrose solution can be seen in Figure 2. In both graphs error bars are included, but due to scale an the small amount of error, they cannot be seen. The viscosities collected by the class at each temperature versus concentration are graphed in Figure 3. The complete set of data from the class can be found in Appendix B.
This resulted in a 19.05 percent error. Figure 1 shows the load versus extension and Figure 2 shows the stress strain curve. Figure 1: Load as a Function of Extension of AA 2024T351 Figure 2: Stress as a Function of Strain Graph of AA 2024T351 AA 5052-0 The material properties of alloy AA 5052-0 is shown in Table 1. Table 2: 5052-0 Specimen Experimental
This issue can be minimized by avoiding concrete in the neutral axis without bearing significant strength. Saving of concrete can be efficiently achieved with increase in length and depth of the beam. Therefore it can be effectively utilized during the construction of plinth beams, raft foundation, piers and similar other
The summary that can get from the table is the mean density for 1000ºC, 1100ºC and 1200ºC sintering temperature is 3.24, 3.26 and 3.25 each respectively. Based on Table 4.2 shows, the samples of magnesium doped calcium phosphate pellets by using different weight percentage of magnesium pellets without sintering temperature. From the experiment, different weight percentages is used such as 1.0wt.%, 1.5wt.% and 2.0wt.% .Similar with the previous explanation, five samples are being used to measure the density of the samples. The summary that we can get in this table is the mean density for 1.0wt.%, 1.5wt.% and 2.0wt.% weight percentages is 2.75, 2.66 and 2.97 each respectively. Table 4.3 shows the density test in 1.0wt.%, 1.5wt.% and 2.0wt.% of magnesium doped calcium phosphate pellets at 1000ºC sintering temperature for five samples.
This deposits the maximum dose below or on the skin surface. A bolus should be flexible and pliable so it can contour the skin surface without any air gaps. Paraffin wax, Vaseline gauze, wet gauze or towels, and water bags are noncommercial materials that can be used. Commercial materials have variable thicknesses or powder forms that can be mixed with water. Boluses may be applied on scars, superficial lymph nodes, or on uneven skin surfaces (McDermott & Orton, 2010).
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. There is an 85% difference between the two which is most likely to be caused by the 10mM outlier. Now if the 10 mM data values are removed the results are 5.2 mM for the cathode and 4.5 mM for the anode. This is a 15% difference between the two calculated unknowns. Although the percent difference is not idea, it is considerably better than the values show in Table 2a.