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- Write the structural formulas for two (2) chloro-isomers that can formed from 2-methypropane (isobutene). How many sets of equivalent hydrogen are there in the compound 2-methypropane?(4) Describe the synthesis of plastic especially polyethylene, 1,1- dichloroethane, and polyvinyl chloride1) The U.S. Bureau of Alcohol, Tobacco and Firearms has ruled that nitrocellulose containing more than 12.6% nitrogen is classified as a high explosive. Calculate the mass percent of nitrogen in tri- nitrocellulose, made up of the monomer, C6H₂O₂(NO3)3, and of di-nitrocellulose, C6H8O3(NO3)2. Percent nitrogen in C6H7O₂(NO3)3 Percent nitrogen in C6H8O3(NO3)2 2) Complete and balance the combustion reaction, To save a copy of this document, click Duplicate. C6H10O5 + 0₂ 3) Complete and balance the combustion reaction, below, for the tri-nitrocellulose monomer. _C6H7O₂(NO3)3 + CO₂ + N₂ + CO₂ 4) Tri-nitrocellulose can burn explosively (hence the ATF ruling). Why? + H₂O H₂O
- The melting points and boiling points of two isomeric alkanes are asfollows: CH3(CH2)6CH3, mp = −57 °C and bp = 126 °C; (CH3)3CC(CH3)3,mp = 102 °C and bp = 106 °C. Explain why there is a small difference in the boiling points of the two compounds, but a huge difference in their melting points.1. Answer the following questions: (a) Why is free radical polymerization more commonly used today than ionic polymerization? (b) Almost all substituted ethylene monomers of commercial importance have the structure of CH2 = CHR or CH2 = CRR’ (where R or R' represent identical or different substituent groups). Why? (c) What are some methods for the production of conductive polymers? Give a few examples.During our lectures on polymeric materials, I used polyethylene as an example because of its very straightforward structure. Draw a diagram of a long-chain molecule of polyethylene that consists of six units (or mers) of ethylene along with the starting and endpoint OH-. Include bonds in your diagram.
- Can you explain condensation polymerization and give an example with structure of one with 2 carboxylic acid groups and 2 OH groups.The U.S. Bureau of Alcohol, Tobacco and Firearms has ruled that nitrocellulose containing more than 12.6% nitrogen is classified as a high explosive. Calculate the mass percent of nitrogen in tri-nitrocellulose, made up of the monomer, C6H7O2(NO3)3, and of di-nitrocellulose, C6H8O3(NO3)2.1. What are biodegradable polymers and their classification ( include its functions and importance)?
- 4. Illustrate each of the following reactions using names and structures; a) The reaction of 2-methyl-propene with hydrogen bromide. b) The condensation of ethanol with butanol. 5. The labels were mixed up on bottles of pentane, hexanal and heptan-1-ol. How could boiling point be used to distinguish between these three colourless liquids? Explain. 6. Illustrate the series of reactions that can be performed to produce propylmethanoate from two alcohols.4. (a) (b) (c) (d) (e) (f) Draw the structure of the repeating unit in a polymer in which the monomer(s) is/are propylene 1,1-dichloroethylene vinyl acetate bisphenol A + phosgene ethylene glycol + terephthalic acid 1,4-chlorobenzene + sodium sulfide (a condensation polymerization affording NaCl)During our lectures on polymeric materials, I used polyethylene as an example because of its very straightforward structure. (a.) Hydrogen peroxide (H2O2) is used as an initiator for the polymerization of ethylene. Draw a diagram of a dissociated hydrogen peroxide molecule which emphasizes the creation of two free radicals (unbonded electrons) that can serve as initiators or as terminators of polymerization.