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

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 93AP

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