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Assume that the literature value for the heat of neutralization of a strong acid and a srong base is -56 Kj/mol. Use the following hypothetical values of delta H to predict the value of delta H for the dissociation of the weak acid HA and the weak base BOH. Write all equations in net ionic form.
Ha (aq) + NaOH(aq) yields NaA(aq) + H20(l) delta h = -45Kj/mol
HCl(aq) + BOH)aq) yields BCl (aq) +H20(l) delta H = -38 Kj/mol
Draw all the structural isomers for the molecular formula C4H9Br. Be careful not to draw any structures by crossing one line over another
Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 9.80 solution.
Calculate the pH at the equivalence point for the titration of 0.120 M methylamine (CH3NH2) with 0.120 M HCl
What is the importance as well as the strucutre, function and location of the ribosome recycline
Chromium metal can be plated from an acidic solution of CrO3. CrO3(aq) + 6H+(aq) + 6e- Cr(s) + 3H2O How many grams of chromium will be plated by the passage of 19,300 C (coulombs).
Substance A has a greater molar mass then substance B. Both are nonelectrolytes. If 50 g of substance A are dissolved in 250 g of water in one beaker
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution. Its pH was measured as 4.50 on a meter.
Heptane can appear harmless, but when ignited, it explodes violently. What is the first law of thermodynamic?
Calculate the pH of a solution that is formed when 25.0 mL of 0.24 M ammonia (Kb = 1.8 x 10-5) is mixed with 25.0 mL of 0.20 M ammonium chloride.
When determining the pressure of dry hydrogen gas, explain how the measured atmospheric pressure is corrected for the presence
At an altitude of 45.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?
Calculate the volume of water required to reconstitute (also referred to as solubilize) the entire contents of the vial of ovalbumin to a final concentration of 6.1 mM.
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