QUESTION 3 Which of the following will inhibit chain mobility, thus increasing the proportion of amorphous regions in the material (i.e., crystallinity will decrease). O Slower cooling rate O Syndiotactic chain structure O Bulkier (larger) side groups Less branching OO

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A: Strontium (Sr) with atomic number 38 is a metal and it exists in crystal form.

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A: Applying concept of packing and molecular arrangements of hcp , bcc and fcc.

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Q: which will have higher vapor pressure: CH3CH2OH or CH3OCH3 and briefly explain the choice.

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Q: The type of The ato

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Q: 0.1430 nm and a density of 8.57 g/cm3.

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Q: Do non-crystalline materials display the phenomenon of allotropy (or polymorphism)? Why or why not?

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Q: Q4: In the calcium fluorite. CaF2 structure, atoms occupy the position of % % %, which is not filled…

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Q: Pls help on both questions.

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Q: QUESTION 7 Compute the density of materials based on your answers to Questions 3 to 5. (1) Chromium…

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Q: How does the doping increase the conductivity of semiconductors?

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Q: what is the name of the structure OH о N

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Polymerization Kinetics

Polymerization is a chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that diverge in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes. Polymerization is generally classified into step-growth and chain polymerization. Polymers are categorized into linear polymer and cross-linked polymers that are produced either by condensation or additional polymerization.