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Which of the following combinations of terms best describes teh plymerization of a diisocyanate and a diol to form a polyurethane? A) step growth condensation B) chain growth condensation C) chain growth addition D) step growth addition.
How many milliliters of 0.200 M NaOH are needed to neutralize 100. mL of 0.100 M HCl
Using the quantities 3 grams of salicylic acid and 6ml of acetic anhydride noted in the macro scale procedure and any other necessary data, calculate the theoretical yield in moles and grams of aspirin.
A sparingly soluble salt gets precipitated only when the product of concentration of its ions in the solution (Qsp) becomes greater than its solubility product. If the solubility of BaSO4 in water is 8 × 10-4 mol dm-3, calculate its solubility in ..
The standard free energy of a reaction A is 87.4 kJ/mol (20.9 kcal/mol) at 298 K. Reaction B is ten million times faster than reaction A at the same temperature. The products of each reaction are 10.0 kJ/mol (2.39 kcal/mol) more stable than the re..
draw all the possible steroisomers of 1,2,3,4,5-pentachloropetane and assign configurations to all stereogenic centers. Label each as either optically
Calculate the activation energy of this reaction in kJ/mol At what temperature would the half-life be 12.0 min?
the concentration of copper(II) sulfate in a brand of fertilizer is 0.07% by weight. If a 21.5 g sample of this fertilizer is dissolved in 2.0L solution, what is the molar concentration of Cu2+.
Calculate concentrations of OH- and the pH of each basic solution. Since NaOH donates on OH- ion for each NaOH molecule, the OH- concentration is equivalent to the NaOH molarity. The pOH is calculated as -log[OH-] and the pH is calculated as 14-pO..
How many milliliters of water must be added to a stock solution of 6.00 M HNO3 in order to prepare 500 mL of 0.200 M HNO3 by dilution.
Draw the structure(s) of all of the possible monochloro derivatives of 2,2-dimethylpropane, C5H11Cl. Please Explain.
Calculate the ionic strength of a solution that is 0.05 mol/kg in Na3[Fe(CN)6](aq), 0.02 mol/kg NaCl(aq), and 0.03 mol/kg in NaBr(aq).
How many grams of butane must be burned to provide the heat needed to melt a 85.0-g piece of ice (at its melting point) and bring the resulting water to a boil (with no vapourization)? Assume a constant pressure of 1 bar and use the following data
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