TW 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 2 30 3.0 4.5 00 3.5 35 F1 Chemical Shift (ppm) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 F2 Chemical Shift (ppm) 5.0 5.5 6.0 6.5 7.0 70 7.5
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From this COZY spectrum, how do you know which protons are next to each other?
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- how do I round 0.004198 to 3 sig figsThe spectroscopic data in the table is generated with five solutions of known concentration. Concentration (M) 0.0133 m= 0.0266 0.0532 0.106 0.213 Absorbance 0.1271 What is the intercept of the linear regression line? 0.08531 0.5388 1.069 Use a spreadsheet program, such as Microsoft Excel, to graph the data points and determine the equation of the best-fit line. 1.954 What is the slope of the linear regression line formed by these points? M-1Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction: 4Fe (s)+30, (g)→ 2Fe,0, (s) Round your answer to zero decimal places. kJ x10 Continue O2021 McGraw Hill LLC. All Rights Reserved. Terms
- Question: 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 massThe proton NMR spectrum of a compound, C3H6Cl2, has a pentet at d 2.19 and a triplet at & 3.72 with a 1:2 integration ratio, respectively. Which compound below best matches the data? A) CH₂CH₂CHC1₂ B) CICH₂CH₂CH₂C1 C) CH3CHCH₂C1 Cl C1 D) CH3CCH3 C1In 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…
- Icalate Hi BeHot)+6el2( +2Bels() +oHel(②) using Hess Law Bel310+3H2O→H2B/23(g) +3=-122.5K) B2H6(+6H2O(P)→2HB+6H2(火) →トニ-4734人) Male B₂ HO H2(+244145) Siven +3HP Im Belz00 %2A # 3. 5o09 awww.awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-lijulplKKWv4bwenmyrLYoBHBAAsJtmzj53GErnx_viTdHblGMF9jvgkSu_nrizREmdQXHPJbMzqOmOrXJcuonZITOhB66q?1oBw7QYlbav. LEKS-Courtney Wh New Tab + x O CHEMICAL REACTIONS Percent yield of chemical reactions Courtney S0 OC Gaseous butane CH. reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO,) and gaseous water (H,0). If 2.32 g of water is produced from the reaction of 1.74 g of butane and 10.2 g of oxygen gas, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it. % 固 Explanation Check ©2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility 24 %23 2 4. 9. 5. 8. by k 4 69 C. alt 123Can you show how to out this calculation in the calculator? Everytime I do it, I get a different answer.
- 5The first image is the problem and the second image is alek data to slove the problem. I been having a hard time figuring out how to slove this problem.phs.blackboard.com/webapps/assessment/take/take.jsp?course_assessment_id%3D 36688_1&course_id%3D_31958 1&content_id%3_1130567_1&- 8r 10 13 140 15 16 20 11 12 17 18 19 20 A Moving to another question will save this response. Quèstion 6 Select the statement that is not supported by the following equation: q=0=(mwater)(Cwater)(ATwater)+ (mmetal)(Cmetal)( ATmetal) The total change in heat is the sum of the changes in heat of water and a metal. Energy is conserved. Energy is transferred between water and a metal. Energy is lost during a calorimetry experiment. A Moving to another question will save this response. hp & %23 9. 6. 00 进3