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Kevlar (C14H10N2O2) is used in various applications from tires to body amor due to its high strength-to-weight ratio. The polymer is produced from the monomers paraphenylene diarnine (C6H8N2) and terephthaloyl chloride (C8H4Cl2O2) by the following reaction:
(a) Who type of polymerization does the above reaction represent?
(b) Assuming 100% efficiency, calculate the weight of terephthaloyl chloride required to completely combine with 1 kg of paraphenylene domino.
(e) How much Kesler is produced?
How much heat in kilojoules is required to warm 10.0 g of ice, initially at -10.0^\circ C, to steam at 110^\circ C. The heat capacity of ice is 2.09 {\rm J}/{\rm g} ^\circ {\rm C} and that of steam is 1.84 {\rm J}/{\rm g} ^\circ {\rm C}. q=?kJ
The molar heat capacity of silver is 25.35 . How much energy would it take to raise the temperature of 8.80 of silver by 10.2
The electron in the n=1 state of a hydrogen atom absorbs a photon with an energy of 2.12x10^-18 J. What is the final state of the electron
calculate the purity of the ammonium chloride in the sample.
Describe the development of the modern periodic table. Include contributions made by Lavoisier, Newlands, Mendeleev, and Moseley.
How many milliliters of 5 M NaCl are required to prepare 1500 mL of 0.002 M NaCl. What will be the concentration of the diluted solution expressed in millimolars, micromolars, and nanomolars.
How many orbitals in an atom can have each of the following designations. a. 2s b. 3p c. n = 4 d. 6f
An experiment requires 45.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
Using curved arrows to symbolize electrons, write a complete reaction mechanism for the bromination of acetanilide to create p-bromoacetanilide.
If the total mass of H2O produced is 23.4 grams, what was the approximate mass of the methane in the original mixture?
In a separate experiment, all the sulphur in another 0.464 g sample was converted to 0.859 g of BaSO4. What is the empirical formula of the unknown compound
Can someone please explain how to do this problem? I asked before but the past answers didn't really help A rectangular storage container with an open top is to have a volume of 50 cubic meters. The length of its base is twice the width.
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