Answer Happy

7B. In a typical electrochemical cell, which of the following statements is TRUE? a) In the external wire, electrons travel from cathode to anode. b) Salt bridge isolates the reactants but maintains electrical contact between the two half-ce c) In salt bridge, cations move toward the cathode and anions toward the anode. d) A salt bridge is used to complete the circuit for the whole redox reaction 8B. Regarding systematic errors, which of the following statement is TRUE? a) systematic errors are inevitable. b) systematic errors make the Gaussian distribution broader. c) systematic errors make the Gaussian distribution narrower. d) systematic errors make the Gaussian distribution shifted to one direction 9B. Which of the following statements about light absorption of organic molecules is TRUE? a) a line absorption spectrum is produced b) the o-o* transition is likely to be observed in the visible region of the spectrum c) The light absorption shifts to lower wavelength when molecules contains more unsaturated d) the intensive light absorptions are typically observed in molecules with more unsaturated TE 10B. which reactant in the following redox reaction undergoes reduction? Zn + 4H+ + 2 Voz* -> Zn2+ + 2 Vo2+ + 2 H2O OH a) Zn b) H+ c) VO2+ d) VO2+