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A quantity of 2.00 × 102 mL of 0.862 M HCl is mixed with 2.00×102 mL of 0.431 M Ba(OH)2 in a constant-pressure calorimeter that has a heat capacity (empty) of 453 J/°C. The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.48°C. For the process H+(aq) + OH-(aq) H2O(l), the heat of neutralization is -56.2 kJ/mol. What is the final temperature of the mixed solution?
Use Henderson Hassalbalch equation to calculate how much HCl must be added to a liter of buffer that is 1.5 M in acetic acid and 0.75M in sodium acetate to result in a buffer pH of 4.10? Ka = 1.8 x 10-5
Discuss what you would observe after elution and visualization of a TLC plate having made the following mistakes in carrying out the anaylsis.
Plot NO2 versus time, ln NO2 vs time, and 1/NO2 vs time. Which graph yields the best straight line? what is the reaction order with respect to NO2? Briefly explain
An organic compound is quite polar and is thus much more soluble in methanol than in pentane (bp 36 degree C). Why would methanol
For the reaction 2N2O5(g) yields 4NO(g)+ O2(g) what is the decomposition of N2O5(g)
calculate and compare the enthalpy of monobromination and monochlorination for the given alkyl position
A first order decomposition reaction is observed to have the following rate constants at the indicated temperatures. using an Arrhenious plot, find the activation energy
You decide to use gel filtration. This works brilliantly and you determine that your protein is 80kDa at the same time. But wait! The gene that corresponds to HMD predicts a protein of only 38kDa. What are two potential causes of this discrepancy?
On a certain winter day in Utah, the average atmospheric pressure is 738 torr. What is the molar density (in mol/L) of the air if the temperature is -18 degrees Celsius
Calculate the approximate volume of 0.02M KMnO4 (in the unit of mL) needed to titrate 0.17 g sodium oxalate.(Note: The KMnO4 solution will be added from a buret to a flask during titration.
Indicate which compounds present i) in the reactants and ii) in the products from this lab experiment could be expected to give positive tests with a) permanganate and b) ceric ammonium nitrate.
considering the given equation hcl x3po42 h3po4 xcl2 it is given thatnbspwhen a particular metal a reacts with
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