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17B.1 (b) Calculate the change in molar entropy when the ends of a onedimensional polyethene chain of molar mass 85kgmol1 are moved apart by 2.0nm.

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17B.1 (b) Calculate the change in molar entropy when the ends of a onedimensional polyethene chain of molar mass 85kgmol1 are moved apart by 2.0nm. 17B.2(b) Calculate the restoring force when the ends of a one-dimensional polyethene chain of molar mass 85kgmol1 are moved apart by 2.0nm at 25C. 17C.1 Distinguish between a sol, an emulsion, and a foam. Provide examples of each

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