help me please ;) 12. Polychlorinated biphenyls (PCBS) arc organic mixtures of chlorinatedcompounds that were once widely used as dielectric and coolant fluids inelectrical apparatus. They are now considered to be persistent organic pollutantsFigure 1 shows an example of PCB : 2,2',4,4'-tetrachlorobiphenyl(PCB-47).CIFigure 1What is the m/z value of the most abundant molecular ion peak in a mass spectrum of PCB-47?[Chlorine exists as two isotopes, 3$Cl and 3"Cl ; relative atomic mass : C,12.0; H,1.0; CI,35.5]A. 290В. 292С. 294D. 298

The molecular formula is C12H6Cl4. Molecular weight = (12 x 12.0 amu) + (6 x 1 amu) + (4 x 35 amu)…

12. Polychlorinated biphenyls (PCBS) arc organic mixtures of chlorinated compounds that were once widely used as dielectric and coolant fluids in electrical apparatus. They are now considered to be persistent organic pollutant Figure 1 shows an example of PCB : 2,2',4,4'-tetrachlorobiphenyl(PCB-47). CI Figure 1 What is the m/z value of the most abundant molecular ion peak in a mass spectrum of PCB-47? [Chlorine exists as two isotopes, 3°CI and 37C1 ; relative atomic mass : C,12.0; H,1.0; CI, 35.5] A. 290 В. 292 С. 294 D. 298

12. Polychlorinated biphenyls (PCBS) arc organic mixtures of chlorinated compounds that were once widely used as dielectric and coolant fluids in electrical apparatus. They are now considered to be persistent organic pollutant Figure 1 shows an example of PCB : 2,2',4,4'-tetrachlorobiphenyl(PCB-47). CI Figure 1 What is the m/z value of the most abundant molecular ion peak in a mass spectrum of PCB-47? [Chlorine exists as two isotopes, 3°CI and 37C1 ; relative atomic mass : C,12.0; H,1.0; CI, 35.5] A. 290 В. 292 С. 294 D. 298

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The following equation describes the equilibrium that exists when the weak acid propionic acid (C2H5 CO,H) dissolves in water. (In acting as an acid, the -CO2H group supplies H+ to form H30*.) C2H; CO,H(aq) +H2O(l) 2 H,0+ (aq) + C2 H; CO2-(aq) a Which of the four species are Bronsted-Lowry acids? (Select all that apply.) O H20 O C2H; CO2- O H3o+ O C2H; CO,H b Which of the four species are Brønsted-Lowry bases? (Select all that apply.) O H2O O C2H;CO2 O H30+ O C;H; CO,H
"OH HCI (conc, aq) 4 products!
X A ALEKS- Allie Fleming - Knowled X + eks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IQUHIQg6bJxmeSyVpHOEB1plef9xyC5Ca9Qlh33shYHNlixKQyaDC-AdbABLFpI5Dt90BNOEPu6JcUe7G4HHKAGOBnuFtOq?1oB... E Module Knowledge Check 14 Aqueous sulfuric acid (H₂SO4) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium sulfate (Na₂SO,) and liquid water (H₂O). If 0.963 g of water is produced from the reaction of 6.9 g of sulfuric acid and 7.3 g of sodium hydroxide, calculate the percent yield of water. Round your answer to 2 significant figures. I Don't Know 3 $ 4 R % Submit 5 T 16 ^ X Q Search 6 4+ Y x⁹ & 7 fa 144 U * 19 Pll DII Question 11 8 hp ( f10 no DDI 9 ♡ © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility f11 ) о 10 O 12, insert - P prt sc + { [ = ← Allie Y } ] ola Ar delete backspace h
4 B diene dè nophie redrew Ph Ph CN 2. 4 nw Stereocenters -What 6terobomer (5) will we get ? Exphin in details
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Select one for each box
provide the complete equilibrium equations of the solubilizing of carbon dioxide gas in the air dissolved in rainwater and all species possible pH1 to pH 13. This means writing all species and each equilibrium equation that are present from pH 1 to 14.
Cc.16.