For each of the following pairs of polymers state whether it is possible to determine whether one polymer is more likely to crystallize than the other and if it is possible, note which one is the more likely to crystallize. (a) Linear and atactic poly(vinyl chloride); linear and isotactic polypropylene (b) Linear and syndiotactic polypropylene; crosslinked cis-polyisoprene (c) Network phenol-formaldehyde; linear and isotactic polystyrene (d) Block poly(acrylonitrile-isoprene) copolymer; graft poly(chloroprene-isobutylene) copolymer
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Chemistry, 22.06.2019 19:20
15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.
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Chemistry, 22.06.2019 20:00
What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?
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Chemistry, 23.06.2019 00:30
•hydration •dissociation •dissolving which one goes to which
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For each of the following pairs of polymers state whether it is possible to determine whether one po...
History, 27.06.2019 21:10
History, 27.06.2019 21:10
History, 27.06.2019 21:10
Mathematics, 27.06.2019 21:10
Mathematics, 27.06.2019 21:10
Chemistry, 27.06.2019 21:10
Mathematics, 27.06.2019 21:10