Predict the structure for the unknown. Please provide relevant information regarding each peak and the rationale for how you came to identify each structure. Label any and all peaks. Show all work
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Predict the structure for the unknown. Please provide relevant information regarding each peak and the rationale for how you came to identify each structure. Label any and all peaks. Show all work
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- Calculate the solubility at 25 °C of PBCO, in pure water and in a 0.0020 M Pb (NO,), solution. Round both of your answers to 2 significant digits. solubility in pure water: solubility in 0.0020 M Pb(NO3)2 x10 solution: ? DloQ3/ A) 0.63 g of a sample containing Na,CO3, NaHCO, and inert impurities is titrated with 0.2 M HCI, requiring 17.2 mL to reach the phenolphthalein end point and a total of 43.5 mL to reach the modified methyl orange end point, How many grams NazCO3 and NaHCO, are in the mixture?Page 2 2. A 0.9527 g sample containing only KCI and CaCl2 yielded 3.9802 g of dried Hg2Cl2. Calculate the percent of each halogen compound in the sample. KCI = K* + CIr; CaCl2 = Ca2+ + 2C-; 2CI- + 2Hg* = Hg2Cl2 CI 35.453; K 39.0983; Ca 40.078; Hg 200.59
- Find y n-Al= %3D use the follamng equation: ng mass of Sample = (n-H,-L5y )(65.4) + 27.0y m2య లఆ n-Hy:2720 a lo* moles Ha %3D mass of Sample = A .090 apt (References] TUTOR Determining Molecular Formulas by Combustion Analysis Furnace ot H,0 absorber CO, absorber at Sample at A 2.540 gram sample of an organic compound containing only C, H. and O is analyzed by combustion analysis and 6.408 g CO, and 1.124 g H,0 are produced. In a separate experiment, the molar mass is found to be l22.1 g/mol. Determine the emnpirical formula and the molecular formula of the organic compound. Enter the elements in the order C, H, O empirical formula molecular fomula Submit Show Approach Show Tutor Steps ch FLVWhich of the following combinations of quantum num- bers are allowed for an electron in a one-electron atom? Which are not? (a) n = 2, l = 2, m = 1, m, = } (b) n = 3, l = 1, m = 0, m, = %3D %3D %3D
- MasteringChemistry: H x O The 'Green Vortex' Is Se x IClicker: Student Respo * IClicker Student Add C x gnmentProblemiD=171599883 %23 B Readi <1 of 18 I Review | Constants | Periodc Table What is the formula for this compound? Express your answer as a chemical formula, • View Available Hint(s) Hint 1. How to approach the problem Since this compound is neutral, the total charge of the compound must equal zero. Choose the formula subscripts such that the total charge for aluminum plus the total charge for oxygen is equal to zero. Hint 2. Detemine the charge on the aluminum ion By looking at the periodic table, predict the charge of the aluminum jon. Express the charge numerically (e.g., 1+). v View Available Hint(s) Hint 1. lon formation An ion is an atom that has gained or lost electrons and therefore carries a charge Atoms form ions to achieve the same number of electrons as the nearest noble gas (rare gas) Submit Previous Answers Request Answer Show all 213 PM 70°F 9/25/20212) As an example of precision and accuracy of data, suppose the % carbon in a single compound has been measured thrce separate times by 2 different students. The theoretical % carbon is 21.34%. Student 1: trial 1:26.11%, trial 2: 26.24% trial 3: 25.92 %, Avg - 26.09 Student 2: trial 1: 20.35%. trial 2: 22.64 % trial 3: 19.79 %. Avg = 20.93 a) Which student had the more precise data and how can you tell? b) Which student had the more accurate data and how can you tell? 3a) Calculate the % error of Student 1 data in problem 2 above. Show all work below. WATCH SIG FIGS2729 of Lae Chlude wor lormel in che acen Chlerida fon was in this reackion Achhn-65 (l- 35.5 CaleuloRe 0-16 2HC/ ーの Zの Ch t H.0 -12 formula Moas of Zine CMerde Zine Chle Nember f Meles in Zne Chlarde in hac Chld Rescsed OCked. Moss of Zene Ode shce Lhok was
- Materials/Chemicals: Volumetric flasks Beakers Serologic pipetters Aspirators Vials/test tubes Cone. H3PO4 (85% w/w, sp gr. 1.70, MM 98) Cone. HCL (37.3% w/w sp. Gr. 1.18, MM 36) Glacial acetic acid (99.7% ww, sp gr. 1.05, MM 60) NaOH pellets NaH2PO4 Na2HPO4 Acid-base indicators: Bromophenol Blue Bromocresol green Phenol red Methyl red Methyl orange Phenolphthalein Thymol Blue pH paper pH meter Weighing balance For chemicals, refer from the template below. Research the chemicals to be used especially those that are new to you and write down the information needed. Name of Chemical Molec. Weight (g/mol) Melting point Boiling point Density (g/mL) General properties Methodolody: (Include a short summary of the overall experimental plan you are going to run. You may use flow chart or bullet form for this part. Sketches of any experimental set-ups used in the experiment or the workup procedures). Preparation of buffers Prepare 250ml of the…NItroglycer in (e3 HSN30,) 403 Hs Ng Oq >6Ngt 13c0, + 10 tgO + Og what is the maximum amount of Og in grams that can be obtained from 8.00 x10% 0f 8 ntnglycerin? 3 eig Fig It rogly cein ?3 gigtg(URGENT) Help fill in the rest of the empirical formula of an unknown chart. The parts that are filled in are given as context clues, the rest is to solve through a direct estimate.