Concept explainers
Interpretation:
The
Concept introduction:
The polymers are classified based on the intermolecular forces present in the compound. These are four types. i.e., 1) Elastomers 2) Fibres 3) Thermoplastic polymers 4) Thermosetting polymers
Elastomers are the polymers which contain weakest forces of attractions.
Fibres are the thread forming polymers which contain very strong intermolecular attractions. Hence these polymers are used to make ropes (nylon (6, 6))
Thermoplastics are the polymers which are linear or slightly branched and having intermediary intermolecular attractions between elastomers and fibres.
Thermosetting
Want to see the full answer?
Check out a sample textbook solutionChapter 8 Solutions
Chemistry for Engineering Students
- Why is the C 60form of carbon called buckminsterfullerene?arrow_forwardUse the web to look up information on nanotubes. Distinguish between single-walled and double-walled nanotubes.arrow_forwardWhat is the relationship between the structures of buckminsterfullerene and carbon nanotubes?arrow_forward
- 8.97 The doping of semiconductors can be done with enough precision to tune the size of the band gap in the material. Generally, in order to have a larger band gap, the dopant should be smaller than the main material. If you are a materials engineer and need a semiconductor that has lower conductivity thin pure silicon, what clement or elements could you use as your dopant? (You do not want either an n- or a p- type material) Explain your reasoning.arrow_forward8. Clausthalite is a mineral composed of lead(II) selenide. The mineral adopts a NaCl octahedral-type structure. If the density of PbSe is 8.27 g/cm³, calculate the radius of the lead(II) ion. (The radius of selenide ion is given below.)arrow_forwardWhat type of bonding would you expect in Silicon nitride? explain the answer and what kind of secondary bonding would occur between polymer chains?arrow_forward
- 2 The Crystal Structure is BCcarrow_forward2.4 2.5 The unit cell for Platinum (Pt) has atoms which are located at each of the corners and at the centre of all the unit cell faces. The density and atomic weight of Pt are 21.45 g/cm³ and 195.08 g/mol, respectively. Given that the Avogadro's Number is 6.023 x 1023 atoms/mol, (a) sketch the atomic arrangement on the (010) plane of the unit cell. (b) determine the lattice constant, a of Pt atom. (c) calculate the atomic radius of Pt atom. A sample of BCC iron (Fe) was placed in an X-ray diffractometer using incoming X-rays with a wavelength, λ = 0.1541 nm. Diffraction from the {110} planes was obtained at 20 = 44.704°. Assuming that the order of reflection is 1, calculate: (a) the interplanar spacing of the planes (b) the value for the lattice constant, a for BCC Fearrow_forward48) An unknown hydrate of zinc sulfate, ZnSO4 • XH2O, is heated to give 30.8% water. What is the water of crystallization (X) for the hydrate? A) 1B) 7C) 6D) 9E) 4arrow_forward
- Q619 Calculate the radius of a copper atom. Copper has a face centered cubic (FCC) crystal structure with a volume density of 8.95 x 106g m-3 and an atomic weight of 63.54 g mol-1 (Given the Avogadro’s, NA = 6.023 x 1023 atoms mol-1arrow_forwardCompound 47 is a high boiling liquid with the chemical formula c8h8o. The compound reacts with Ag+ ions in aqueous ammonia to form a silver mirror. Determine it's structurearrow_forward?CaSO4+AlCl3→CaCl2+Al2(SO4)3 Whats ?arrow_forward
- Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781285199023Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning