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Question
An unbranched polyethylene chain contains 50 carbon atoms. There are three possibilities of orientation for each of these bonds. Consider only the C-C bonds in the chain. (a) Calculate the entropy of one polymer molecule (J K-1 ), according to Boltzmann. (b) Calculate the entropy of 3 moles of polymer molecules (J K-1 )
A certain indicator, HA, has a Ka value of 0.00050. The protonated form of the indicator is red and the ionized form is blue. What is the pKa of the indicator
Show all the reaction steps and mechanism for the reaction cyclohexanone with ethyl chloroacetate with sodium ethoxide and ethanol to form ethyl B, B- pentamethyleneglycidate
Determine which of the following reactions are oxidation-reduction reactions and which are not. what type of reaction do you have if it is not an oxidation-reduction reaction?
Calculate the maximum non-expansion work per mole that may be obtained from a fuel cell in which the chemical reaction is the combustion of propane at 298K
The measured pH of the deionized water is very likely not 7, it will be slightly less.
in one experiment 1.0 mol h2o and 1.0 mol co are put into a flask and heated to 350 c. in a second experiment 1.0 mol
What is the solubility of AgCl when it is in a solution of 0.15 M NaCl? (AgCl has Ksp = 1.8 x 10-10.) Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium concentration.
The specifications on the process call for a concentration of 15.00 +/- 0.1 particles/ft3. What fraction of etching systems conform to specifications?
Compare the amount of energy released by the complete combustion of 1 gallon of ethanol with the amount of energy released by the complete combustion of 1 gallon of octane.
Write a balanced equation for the reaction that occurs when hydrogen sulfate ion behaves as a Brønsted-Lowry acid in water.
At a certain temperature the Kp for the decomposition of H2S is 0.867.Initially, only H2S is present at a pressure of 0.284 atm in a closed container. What is the total pressure in the container at equilibrium?
A 1.5991 g sample of a hydrocarbon is combusted to give 1.6918 g of H2O and 5.1661 g of CO2. What is the empirical formula of the compound
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