A polydisperse sample of polystyrene contains 5, 20, 50, 22, and 10 molecules with the corresponding molecular weights of 1000, 5000, 12000, 13000, and 14000 g mol-1 respectively. Calculate number average molecular weight (Mn), weight average molecular weight (Mw) and polydispersity index (PDI). Structures of four polymers are given below. Identify each polymer as conductive and non-conductive organic polymers and provide the reasons. a) (b) (d) (c) /hat are the fuel cells? Explain the role of electrolyte and polymer membrane in the Proton Exchange Membrane Fuel Cells (PEMFC).

A polydisperse sample of polystyrene contains 5, 20, 50, 22, and 10 molecules with the corresponding molecular weights of 1000, 5000, 12000, 13000, and 14000 g mol-1 respectively. Calculate number average molecular weight (Mn), weight average molecular weight (Mw) and polydispersity index (PDI). Structures of four polymers are given below. Identify each polymer as conductive and non-conductive organic polymers and provide the reasons. a) (b) (d) (c) /hat are the fuel cells? Explain the role of electrolyte and polymer membrane in the Proton Exchange Membrane Fuel Cells (PEMFC).

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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