Normalized Intensity 0.9 0.8 0.7 0.6 0.5- 0.4 0.3- 0.2 0.1 0 ва ་་ FE 0.00 0.01 0.31 0.00 0.00 0.00 0.05 ㅂ H ㅂ 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 Chemical Shift (ppm) 0.11 0.00 0.00 0.17 0.00 0.05 0.12 0.00 0.00 0.01 0.00 0.18 0.01 0.00 0.18 0.01 ㅂ 3.0 ㅂ ㅂㅂㅂ 2.5 2.0 1.5 H 1.0 0.5 0
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- Run # Run # 67855 9 1 2 [103] (M) 0.010 4 0.020 3 0.010 0.010 Effect of Concentration Data (Table 1) [I] (M) 0.10 0.10 0.20 0.10 [103 10 (M) T (°C) 5.0 15.0 25.0 35.0 45.0 [I]lo (M) Temperature Effect Data (Table 2) [H*], (M) Time (s) 58.3 22.4 8.6 4.1 2.1 Time (s) 17.7 9.1 4.9 4.6Question: Using a method for the determination of % CaO in limestone the following results were obtained for a NIST Certified Reference Sample (CRM): % Cao 50.38, 50.20, 50.31, 50.22 50.41 Five samples were obtained from a railcar of limestone. The analysis of the samples gave the following results: % CaO 55.01, 59.61, 58.82, 64.39, 62.49 a) Determine the variance due to sampling. b) If the samples taken from the railcar had a mass of 0.500 g, what massGiven that ln(A1) = ln(A0) – kt1 ……….. (i) ln(A2) = ln(A0) – kt2 ……….. (ii) Where A1 = A0 - x1 A2 = A0 - x2 Y = x2 – x1 Prove that x(1)={Ao-[y/(1-e^-k(t2-t1)]} Using SOUND, BALANCED NUCLEAR EQUATION/REACTION AND PRINCIPLE ONLY, explain “How does KI work to help mitigate the effect of exposure to radiation?” http://www.thestar.com/news/article/954546--radiation-fears-spark-run-on-iodide-pills ® ® ® “the SOURCE OF HEAT that resulted in the melt-down at the Fukushima-nuclear-reactor?” [Actual balanced nuclear equations showing heat generated or absence of certain things required for full point]…
- In the technique of high performance liquid chromatography (HPLC) the peak area response for a particular analyte is directly proportional to concentration Analgesic tablets typically consist of aspirin and caffeine as the active ingredients, the remainder made up of inert binding material. The concentrations of aspirin and caffeine may be routinely monitored using HPLC, whereby the peak areas obtained from a solution of the tablet are compared with those obtained from standard solutions of the analytes. In an analysis to determine the concentration of caffeine in such a tablet, the following data were recorded: Solutions Analysed: Tablet Sample: Mass of tablet (dissolved in 250 cm methano): 0.523 g Caffeine Standard: Mass of caffeine (diessolved in 500 cm methanol) 0.105 g HPLC results: Solution Peak Area (catfeine) 1. Tablet Sample 325 2. Caffeine Std. 865 The concentration of caffeine in the tablet (expressed as a mass (w/wl percentage) was Oa 1.89 Ob 13.4 O 3.77 Od. 267 Oe 7.54 You…C2H3ClO2 is the formula, the solvent is CDCl3. Need help determining Integration values the multiplicity and the chemical the Peak refers to.Zinc (Zn) Calibration Curve 0.070 0.060 0.050 0.040 0.030 0.020 0.010 0.000 0.0000 0.0010 0.0020 0.0030 0.0040 0.0050 0.0060 0.0070 [Zn] (M) Estimate the concentration (in M) of an unknown Zn sample that has an absorption of 0.025. 0.0050 Absorbance
- 1. Each of the following IR spectra is associated with one of the aromatic compounds below. Identify the compound associated with each spectrum. N. H HO a-tetralone B-tetralone 2-indanone N-methylbenzamide m-cresol Spectrum A MICRONS NICOLET 20SX FT-IR 2.8 2.9 2.5 100 2.6 2.7 3.5 4 4.5 5.5 7 10 11 12 13 14 15 16 17 18 19 21 22 0.0 90 .05 80 0.1 70 % 0.2 60 50 0.3 40 0.4 0.5 30 -0.6 20 0.7 0.8 0.9 1.0 2.0 4000 3800 3600 3400 3200 3000 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 450 WAVENUMBERS Spectrum B MICRONS NICOLET 20SX FT-IR 2.5 100 2.6 2.7 2.8 2.9 3 3.5 4 4.5 5.5 7 8 10 11 12 13 14 15 16 17 18 19 21 22 + 0.0 90 .05 80 0.1 70 % 0.2 60 50 -0.3 B 40 0.4 E 0.5 30 0.6 20 0.7 0.8 0.9 10 1.0 2.0 4000 3800 3600 3400 3200 3000 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 450 WAVENUMBERS This work by Dr. James S. Nowick, Professor of Chemistry, University of California, Irvine, is licensed under a Creative Commons Attribution 4.0 International License. Spectra…The octanol - water aqueous buffer partition coefficients (P) for a drug used to treat glaucoma were obtained experimentally at various temperatures (T) and pH values. The results are presented in the following table: pH=7.0 0.72 0.84 pH=6.25 pH=7.25 T= 27 C 0.24 0.89 T= 30 C 0.31 1.06 T= 40 C 1.23 1.49 27.4 mg of this drug were dissolved in 100 mL of buffered water (pH=7.0; T=30) and then partitioned with octanol portions of 37.1 mL. Calculate how many mg of drug will remain in water after in the first extraction (Fill in ONLY numbers approximated to the 2nd decimal place) Answer: 19.01xe/lo_u-IgNskr7j8P3jH-IQs_dp5pR4ENzvdYC-70kXyMz36BqJhw3sVPvocGun32UOUPGIrV9nmq7j0TWoPIkUZhcVAdR_fp5U740bwH31JZD5NI5Cq?1oBw7QYjlbavbSPXtx-YCjsh_7mMmrc urse Home Login | Student Veri... Bb Logout MyProgrammingLab Imported From IE ITEC2110:Summer2... TunesToTube - Upl.. Web Development.. Publix Applī O CHEMICAL REACTIONS Ciap Using molarity to find solute mass and solution volume Calculate the volume in milliliters of a 2.73M silver nitrate solution that contains 175. g of silver nitrate (AgNO,). Be sure your answer has the correct number of significant digits. mL, x10
- x 9:22 1/24/2Apply the Q test to the following data sets to determine whether the outlying result should be retained or rejected at the 95% confidence level. a. 85.10, 84.62, 84.70b. 85.10, 84.62, 84.65, 84.70Chemistry Fraction no. Elution Vol. (mL) Abs (λ = 410) Fraction no. Elution Vol. (mL) Abs (λ = 410) 1 (PB pH 6.0) 1 0.0050 11 11 0.0041 2 2 0.0032 12 12 0.0060 3 3 0.0040 13 13 0.0064 4 4 0.0064 14 14 0.0063 5 5 0.0067 15 15 0.1109 6 6 0.0067 16 16 2.8902 7 7 0.0050 17 17 0.8500 8 (PB pH 8.0) 8 0.0049 18 18 0.2019 9 9 0.0052 19 19 0.0378 10 10 0.0050 20 20 0.0073 Use the data above to plot an elution profile, in which the absorbance is on Y-axis, and elution volume (volume = fraction number) is on X-axis. The elution profile must indicate at (1) which point the pH change occurred, (2) the fraction(s) which contain the highest myoglobin content, and (3) the maximum absorbance detected.