The decomposition reaction of atmospheric peroxyacetylnitrate (PAN) to products was studied, and the following rates were obtained. Temperature, °C Rate constant, s1 0.00 5.60 x 10-6 10.0 3.20 x 10-5 20.0 1.60 x 10 4 30.0 7.60 x 10-4 43. Fit this data into the Arrhenius equation. Give the values of the following: Slope = ( Select ) y-intercept Pearson coefficient (R) = [ Select ] activation energy of this reaction in kJ/mol [ Select ]
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- The decomposition reaction of atmospheric peroxyacetylnitrate (PAN) to products was studied, and the following rates were obtained. Temperature, °C Rate constant, s 1 0.00 5.60 x 10-6 10.0 3.20 x 10-5 20.0 1.60 × 10-4 30.0 7.60 x 10-4 43. Fit this data into the Arrhenius equation. Give the values of the following: Slope = [ Select] y-intercept = [Select] %3DCalculate the volume of BSA stock that will be required to make the standard solutions needed to create the BSA standard curve. Be sure to show your work and include the volume of 0.02 M phosphate buffer required to reach a final volume of 1 mL. From a 2,000 μg/mL BSA stock, create 1 mL of each of the following stock solutions in 0.02 M phosphate buffer using individual microcentrifuge tubes: 50 μg/mL, 250 μg/mL, 500 μg/mL, 1,000 μg/mL, 1,250 μg/mL, 1,500 μg/mL. Be sure to properly label all the microcentrifuge tubes before creating the standards.A mixture containing only KCl and NaBr is analyzed by the Mohr Method. A 0.3172-g sample is dissolved in 50 mL water and titrated to the Ag2CrO4 endpoint, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same endpoint. Report the % (w/w) KCl and NaBr in the sample. [Ans . 84.41 % (w /w); 17.59 % (w /w)]
- The Ksp values of silver chromate Ag2CrO4 and silver iodate Ag(IO3) are given below. Ag2CrO4 Ag(IO3) Ksp 1.12 x 10-12 3.17 x 10-8 Based on these Ksp values, which of the following is true? Choose one option only. Options: a. In the solution consisting of 1.00 x10-4 M Ag+ and 5.00 x10-5 M CrO42-, Ag2CrO4 precipitate will form. b. In the solution consisting of 1.0 x10-4 M Ag+ and 1.0 x10-4 M IO3-, Ag(IO3) precipitate will form. c. In pure water, the solubility of Ag2CrO4 is lower than the solubility of Ag(IO3). d. In the solution consisting of 0.200 M CrO42- and 0.200 M IO3-, Ag2(CrO4) will precipitate first if we add Ag+ ions gradually into the above mixture.The temperature dependence of the vapor pressure is given by the equation: ΔΗ RT Inp = In A – Where: p= vapor pressure T = temperature A = pre-exponential constant AHvap = enthalpy of vaporization In order to solve for the enthalpy of vaporization, AHvap, you must: Step One Add the same expression to each side of the equation to leave the term that includes the variable by itself on the right-hand side of the expression: (Be sure that the answer field changes from light yellow to dark yellow before releasing your answer) ΔΗ RT + Inp = + In A Drag and drop your selection from the following list to complete the answer: 1 1 In In A - In A KTwenty observations on etch uniformity on silicon wafers are taken during a qualification experiment for a plasma etcher. The data are as follows: Etch Uniformity 5.34 6.65 4.76 5.98 7.25 6.00 7.55 5.54 5.62 6.21 5.97 7.35 5.44 4.39 4.98 5.25 6.35 4.61 6.00 5.32 (a) Discuss the normality assumption and its role in this problem. (b) Check normality by constructing a normal probability plot. What are your conclusions?
- Calculate the amount of phycocyanin in Sample x in mg where A620=0.191 and A650=0.093, taking into account the dilution factor which is 100 and the total volume of extract which is 50 Note your answer to 2 decimal places.The concentration of hydrolyzed nitrocefin at each time point for an experiment is given below. Time (min) Concentration (μM) 0.5 6.01 1 11.78 1.5 17.6 2 23.51 2.5 29.58 3 35.31 3.5 39.73 4 44.5 4.5 48.18 5 50.05 5.5 52.72 6 54.01 6.5 55.06 7 55.65 7.5 56.39 8 56.74 8.5 57.49 9 58.03 9.5 58.61 10 58.69 Make a graph that plots the concentration of hydrolyzed nitrocefin (in μM) against time (in seconds) using Excel, R, SPSS or other computable software. Where appropriate, include a trendline that shows the linear range on your graph. Include the equations for the trendlines and the R2 value on the graph. Your graph should also include a title and appropriate titles for the x- and y-axes, with units included where appropriate. To determine the initial velocity of a possible insert in this experiment, you must determine what the linear range is in these data (see note below). Based on your graph, which time points represent a suitable linear…The standard curve to determine the amount of betacyanin is shown below. You extracted a red pigment from a beet disc (the mass of a disc is 2 g) using 10 ml of 20% ethanol solution. You measured absorbance of the solution above the beet disc every minute for a total time of 20 minutes. The increase in absorbance was linear during a period of time from 1 min to 10 min. The absorbance at 10 min was 0.8. Calculate the amount of betacyanin extracted from 1g of a beet tissue per minute. Explain your calculations. You can use Excel or a calculator.
- For the following results of Thermodynamics of Borax Solubility, the volume of Borax solution titrated by HCI is 8.00 mL. Table 1. Volumes of hydrochloric acid required to titrate a saturated borax solution at varying temperatures. The hydrochloric acid was a solution standardized at 0.2912 M. Borax Volume added (mL) Temp. (°C) 8.00 8.00 8.00 8.00 8.00 HCI Volume (mL) 50.5 33.75 40.7 27.02 30.0 17.95 20.2 13.43 10.3 8.55 Using Thermodynamic formula (R= 8.31 J/K•mol) and the above results, (e) AS° = (J/K⚫mol) Type your answer...For the following results of Thermodynamics of Borax Solubility, the volume of Borax solution titrated by HCI is 8.00 mL. Table 1. Volumes of hydrochloric acid required to titrate a saturated borax solution at varying temperatures. The hydrochloric acid was a solution standardized at 0.2912 M. Borax Volume added (mL) Temp. (°C) 8.00 8.00 8.00 8.00 8.00 HCI Volume (mL) 50.5 33.75 40.7 27.02 30.0 17.95 20.2 13.43 10.3 8.55 Using Thermodynamic formula (R= 8.31 J/K⚫mol) and the above results, (b) What is the y-intercept of the best fitting line for this data? Type your answer...The standard curve provided below will allow you to answer the remaining questions. Generic Standard Curve 0.7 y = 0.9425x- 0.0034 0.6 0.5 0.4 0.3 02 0.1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Concentration (mg/ml) - Please describe two ways in which you could use this standard curve to determine the concentration of a pigment in an unknown sample.| #1: #2: -What is your rough estimation of the concentration if you determine the absorbance of a sample is 0.150? Absorbance