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Calculate the feed ratio of adipic acid and hexamethylene diamine that should be employed to obtain polyamide of approximately 15000 molecular weight at 99.5% conversion. What is the identety of the end groups of this product? Do the same calculation for a 19,000 molecular weight polymer.
Suppose that for the precipitation of the stock solution of borzac, the solid borax reagent is contaminated with a water-souble substance that does not eact with HCl.
Calculate the concentrations of all species at equilibrium for the following case.
What was the concentration of the original hydroxylamine solution? What is the pH at the equivalence point? Which indicators should be used to detect the endpoint of the titration?
Calculate the mass of nitrogen dissolved at room temperature in an 92.0L home aquarium. Assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78.
Mesitylene is a compound consisting only of C and H. If you burn 0.115 g of the compound, and find that it produces 0.379 g of CO2 and 0.1035 g of H2O.
What by-product is formed along with benzilic acid in this experiment? Draw a structural formula for this substence.
what is the pressure exerted onto the closed end of an apparatus if the atmospheric pressure is 720 torr and the height of the water is 22.3 cm.
Paper pulp produced by kraft/sulphate process is A. bleached easily B. dull white in color C. strong fibrous D. dark colored 2. Claude process of gas liquefaction employs A
The atomic radius of O is smaller than the atomic radius of Se. What is the effective nuclear charge for the valence electron(s) in O and Se
predict the hydration product of limonene if two molecules of water are added to a limonene molecule. 2. draw the expanded structure of D-limonene and circle the two isoprene units in limonene.
How much heat is required to warm 221 g of ice from -46.1°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C
Determine the procedure to make 250ml of 0.1M H3PO4 from concentrated 85%(by mass) H3PO4.
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