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The table below shows some properties of substances C, D and E. Study it and answer the questions that follow. 5 x 10 -3 M solution of a weak acid is 4.

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Some important examples of these substances are discussed in the following sections. This polymer is called polyethylene rather than polymethylene, (-CH2-)n, because ethylene is a stable compound (methylene is not), and it also serves as the synthetic precursor of the polymer. Because radicals are tolerant of many functional groups and solvents (including water), radical polymerizations are widely used in the chemical industry. Once the population has increased, the nutrient composition is changed, forcing the micro-organism to synthesize PHA. Answer the questions in the table below about this molecule with many. You heat the water to 100 °C and notice that the volume increases to 104 milliliters. Monosubstituted monomers, on the other hand, may join together in two organized ways, described in the following diagram, or in a third random manner.

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Historically, many eras were characterized by the materials that were then important to human society (e. stone age, bronze age and iron age). A: In volumetric analysis, endpoint means there's just one excess drop of the titrant. However, one of the drawbacks of polylactides for biomedical applications is their brittleness. Q: INCREASE in BP DECREASE in BP Increased preload Activation of the adrenergic system Venoconstriction…. Answer the questions in the table below about this molecule polar. If instead, the chains of rubber molecules are slightly cross-linked by sulfur atoms, a process called vulcanization which was discovered by Charles Goodyear in 1839, the desirable elastomeric properties of rubber are substantially improved. The repeating structural unit of most simple polymers not only reflects the monomer(s) from which the polymers are constructed, but also provides a concise means for drawing structures to represent these macromolecules. Many of the resulting polymers are largely isotactic in configuration, and have high degrees of crystallinity.

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Allow the colors to mix on their own as you watch them for a couple of minutes. However, the presence of dyes or pigments limits the value of this product. What is the molar mass of the…. In the diagram on the right, crystalline domains are colored blue. The water molecules are closer together because the slower motion allows the attractions to bring the molecules a little closer together. Should we use the same type of cup for the hot and cold water? For polyethylene, arguably the simplest polymer, this is demonstrated by the following equation. Q: What are the description of the ff? Virtually all of the monomers described above are subject to radical polymerization. HDPE is insoluble in water and most organic solvents, although some swelling may occur on immersion in the latter. Check the box under each molecule in the table below that is an isomer of this molecule: - Brainly.com. Pure cellulose, in the form of cotton, is a soft flexible fiber, essentially unchanged by variations in temperature ranging from -70 to 80º C. Cotton absorbs water readily, but is unaffected by immersion in toluene or most other organic solvents. When exposed to water, amines or other nucleophiles, a rapid polymerization of this monomer takes place.

Answer The Questions In The Table Below About This Molecule Of Water

The synthetic methods used to prepare this and other polymers will be described later in this chapter. The copolymerization of styrene with methyl methacrylate, for example, proceeds differently depending on the mechanism. C-C-C-C-C cl F 91 3. The outgassing of plasticizers used to modify interior plastic components of automobiles produces the "new-car smell" to which we are accustomed. What evidence do you have from your experiment to show that the speed of the water molecules is different in hot water? Spectra is shown in letters and molecules are shown by numbers in the documents below, match them to each other and fill out the chart correctly please). A: Formula used ∆G = ∆H — T∆S For spontaneous reaction ∆G < 0 To make reaction spontaneous…. Q: For each system listed in the first column of the table below, decide (if possible) whether the…. The table below shows some properties of substances C, D and E. Study it and answer the questions - Tutorke. HDPE is composed of macromolecules in which n ranges from 10, 000 to 100, 000 (molecular weight 2*105 to 3 *106). Ask students to help you design an experiment to see if the speed of water molecules is different in hot water compared to cold water. Students should realize that since the molecules in the cold water are moving slower, they should have fewer motion lines than the molecules in room temperature water. Q: Stearic acid and linoleic acid have 18 carbon atoms each. Materials for each group.

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In cases where the relative reactivities are different, the copolymer composition can sometimes be controlled by continuous introduction of a biased mixture of monomers into the reaction. Charles Moore, an American oceanographer, in 1997 discovered an enormous stew of trash, estimated at nearly 100 million tons, floating in the Pacific Ocean between San Francisco and Hawaii. For now, students should focus on the motion of the molecules, how they interact, and their distance from one another. Students add food coloring to hot and cold water to see whether heating or cooling affects the speed of water molecules. Answer the questions in the table below about this molecule form. The two open bonds remaining at the ends of the long chain of carbons (colored magenta) are normally not specified, because the atoms or groups found there depend on the chemical process used for polymerization. Answered by ConstableUniverse3460. Placing such materials in a landfill results in a slower anaerobic decomposition, which produces methane, a greenhouse gas.

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Can anybody help me name it? Once in the ocean, nurdles may absorb up to a million times the level of any organic pollutants found in surrounding waters. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. These molecules align themselves side by side into fibers that are stabilized by inter-chain hydrogen bonding between the three hydroxyl groups on each monomer unit. The monomer of cellulose is the C6H12O6 aldohexose D-glucose. Make sure to type in ALL lower cases for the names of the compounds. ) Temperature should be the only variable. Q: To find the Ce content, a 5. These are defined below. Solved] Complete the table below assigning each spectrum to the correct... | Course Hero. Students should realize that the molecules in hot water move slightly further apart, accounting for the increased volume. Download the student activity sheet, and distribute one per student when specified in the activity. What can we do to find out? A: Covalent compounds are formed by the sharing of the electrons while ionic compounds are formed by….

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A: specificity- Bond specificity is also called as relative specificity. The polyisobutylene product is a soft rubbery solid, Tg = _70º C, which is used for inner tubes. Such copolymers may have improved physical properties compared with homo P(3HB). Q: And after you draw your activity, please take a picture and submit to Edmodo. 2 TRANSMITTANCE * TRANSHITTANCE Spectrum D Spectrum C capillary flim between salt plates liquid sample between salt plates 2928 2837 - 2983 2874 HAVENUMBERS 1853 1738 1500 1437 1580 1468 1371 puright 1992 1298 1193 Copyright 1994 1837 - $120 1833 918 1868 MOM 719 840 630. Here the monomeric units are distributed randomly, and sometimes unevenly, in the polymer chain: ~ABBAAABAABBBABAABA~. Isomers are compounds that has the same molecular formula but different structural formulas. Escaped nurdles and other plastic litter migrate to the ocean gyre largely from land. 001 equivalents of n-butyllithium causes an immediate polymerization.

The mp decreases from 179 to 130 (or lower) with an increase in 4HB, and as 4HB increases from 0% to 100% the Tg decreases from 4 to -46. The answer is hydrogen atoms. Q: How would you prepare the following a) 250. What does the 2 mean in the formula 5Mg3(PO4)2? Because we are trying to find out if temperature affects the motion of water molecules, we should keep everything else about the experiment the same. Since larger molecules in a sample weigh more than smaller molecules, the weight average Mw is necessarily skewed to higher values, and is always greater than Mn. Find answers to questions asked by students like you. Q: A laboratory procedure calls for a standard 5. A: Firstly, the gases are mixed which will increase randomness which resulted in increasing entropy…. Q: HO HO, What is this molecule's chemical formula? A: Given requirements, Q: Fill up the empty boxes with the correct chemical structures. This material is methyl 2-cyanoacrylate, CH2=C(CN)CO2CH3.

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