Domanda del libro di testo
Saran, the polymer used to make saran wrap, is an addition polymer formed from two monomers—vinylidene chloride and vinyl chloride. Draw the structure of the polymer. (Hint: The monomers alternate.)
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Ch.13 - Solids & Modern Materials
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving117
- Ch.2 - Atoms & Elements106
- Ch.3 - Molecules and Compounds128
- Ch.4 - Chemical Reactions and Chemical Quantities56
- Ch.5 - Introduction to Solutions and Aqueous Solutions84
- Ch.6 - Gases112
- Ch.7 - Thermochemistry96
- Ch.8 - The Quantum-Mechanical Model of the Atom60
- Ch.9 - Periodic Properties of the Elements86
- Ch.10 - Chemical Bonding I: The Lewis Model91
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory85
- Ch.12 - Liquids, Solids & Intermolecular Forces51
- Ch.13 - Solids & Modern Materials48
- Ch.14 - Solutions93
- Ch.15 - Chemical Kinetics114
- Ch.16 - Chemical Equilibrium68
- Ch.17 - Acids and Bases137
- Ch.18 - Aqueous Ionic Equilibrium154
- Ch.19 - Free Energy & Thermodynamics91
- Ch.20 - Electrochemistry105
- Ch.21 - Radioactivity & Nuclear Chemistry74
- Ch.22 - Organic Chemistry141
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Capitolo 13, Problema 69
Teflon is an addition polymer formed from the monomer shown here. Draw the structure of the polymer.
Guida verificata passo dopo passo1
Identify the monomer structure: The given monomer is dibromoethylene, with the structure Br2C=Br2C.
Understand the polymerization process: Teflon is formed through an addition polymerization process where the double bonds in the monomer break and form single bonds, linking the monomers together.
Draw the repeating unit: Replace the double bond between the carbon atoms with a single bond and connect the carbon atoms to form a chain. Each carbon will have two bromine atoms attached.
Connect the repeating units: Link multiple repeating units together by connecting the carbon atoms in a chain, ensuring that each carbon atom has two bromine atoms attached.
Represent the polymer structure: Use the repeating unit to show the polymer chain, indicating that the structure repeats indefinitely to form the polymer Teflon.
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Addition Polymerization
Addition polymerization is a process where unsaturated monomers, such as alkenes, react to form a polymer. In this reaction, the double bonds of the monomers open up, allowing them to link together into long chains. This type of polymerization is crucial for creating materials like Teflon, which is derived from the monomer shown in the image.
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02:55
Addition Reactions
Monomer Structure
A monomer is a small, simple molecule that can join together to form a polymer. The structure of the monomer determines the properties of the resulting polymer. In the case of Teflon, the dibromoethylene monomer features carbon-carbon double bonds and bromine substituents, which influence the polymer's characteristics, such as its chemical resistance and non-stick properties.
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01:42Resonance Structures
Polymer Structure Representation
The structure of a polymer can be represented by repeating units derived from its monomer. For Teflon, the polymer structure consists of a long chain of carbon atoms with fluorine atoms attached, resulting from the addition of multiple dibromoethylene units. Understanding how to draw and represent these structures is essential for visualizing the properties and behaviors of polymers.
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01:42Resonance Structures
Pratica correlata
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Polyacrylonitrile (PAN) is an addition polymer with the struc- ture shown here. Draw the structure of the monomer.
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Domanda del libro di testo
Does a photon of red light with a frequency of 4.29⨉1014 Hz have sufficient energy to promote an electron from the valence band to the conduction band in a sample of silicon (the band gap in silicon is 1.11 eV)?
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Domanda del libro di testo
Copper iodide crystallizes in the zinc blende structure. The sep- aration between nearest neighbor cations and anions is approximately 311 pm, and the melting point is 606 °C. Potassium chloride, by contrast, crystallizes in the rock salt structure. Even though the separation between nearest-neighbor cations and anions is greater (319 pm), the melting point of potassium chlo- ride is higher (776 °C). Explain.
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Domanda del libro di testo
Indicate if each solid forms an n-type or a p-type semiconductor.
a. silicon doped with gallium
b. germanium doped with antimony
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