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Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) Enter scientific notation as 1.23E4. (A) The initial pH : Enter only numbers in your answer. (B) The volume of HI(aq) required to reach the equivalence point : (C) The pH at the half-neutralization point. Enter only numbers in your answer. (D) The pH at the equivalence point
An aqueous CaCl2 solution has a vapor pressure of 83.0 mmHg at 50 degrees celsius . The vapor pressure of pure water at this temperature is 92.6 mmHg.
Treatment with chymotrypsin, which cleaves on the carboxy side phenylalanine gave only the tetrapeptide. What is the amino acid sequence for this tetrapeptide?
The next question was this: "What is the PH at it's equivalence point? AS part of your answer, define equivalence point. What does it mean for a substance to be at its equivalence point?"
What is the pressure in a 65.0L cylinder filled with 0.235 moles of nitrogen gas at a temperature of 105K.
What products would you expect from reaction of 1-bromopropane with the reagent NAI? I believe this is a SN2 reaction
determined using x rays methods. Remember a, b, c are unit cell dimensions . X', y' and z' are intercepts. Only the information you need is given . You may encounter as unusual rarely formed face
At 745K, the reaction 2AB(g) ? A2(g) + B2(g) has a Kc = 2.00 x 10-2. If a mixture of 1.00 mol AB and 1.00 mol A2 is sealed into a 10.0 L flask and heated to 745K, what will be the equilibrium concentration of B2
When you initially standarized your NaOH sollution, you diluted your HCl stock solution and added water to it. If you used 24.8 ML of 0.18 M HCl stock solution and added another 26.2 mL of water, what is the new molarity of the acid
A small cube of aluminum measures 15.6 mm on a side and weighs 10250 mg. what is the volume of this cube in cubic cm? how would I find this out.
What is the percent-yield of H2 in the reaction below when an equimolar mixture of CH4 and CO2 with an initial total pressure of 20.0 atm reaches equilibrium at 1200. K, at which Kp = 3.548 x 106
Calculate the transformation rate for the austenite-to-pearlite transformation at 650 °C and at 600 °C. Show the relationship(s) you used to arrive at your answers.
Identify the Lewis acid and Lewis base that lead to the formation of the following species: (a) AlCl4-, (b) Cd(CN)4 2-, (c) HCO3-, (d) H2SO4
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