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A 0.15 M aqueous solution of the weak acid HA at 25.0 C has a pH of 5.35. What is the value of Ka for HA ?
Which of the following statements is correct concerning the neutralization of sulfurous acid by a strong base 2OH-(aq) + H2SO3(aq) SO32-(aq) + 2H2O(l)
Which plot would not have a slope from which the indicated quantity for the reaction A ? Product(s) could be determined
Ea for a certain biological reaction is 50 kJ/mol, by what factor ( how many times) will the rate of this reaction increase when body temperature increases from 37 C (normal ) to 40 C (fewer)
Based on the reaction of halide ions NaI,NaBr,NaCl with KMnO4 rank the three halide ions in order of decreasing reducing agent strength. Use to indicate greater strength and = to mean equall strength.
When 20 mL of a 315 mL stock solution containing 2.2 M AlCl3 is diluted to 81 mL, what is the concentration of Al3+ in the new solution.
How much heat (in ) is evolved in converting 1.00 of steam at 145.0 to ice at -50.0? The heat capacity of steam is 2.01 and of ice is 2.09.
Although the viscosity varies over a factor of more than two in the series from hexane to nonane, the surface tension at at 25 degrees Celsius increases by only about 20% in the same series. How do you account for this
30 mL of 0.25 M acetic acid are titrated with 0.05 M KOH. What is the pH after addition of 75 mL KOH
What is the heat of combustion of the glucose expressed in kJ/mol C6H12O6? (1) +2.80x10^3 kJ (2) -2.80x10^3 kJ (3) -15.6 kJ (4) +65.4 kJ (5) -65.4 kJ The correct answer is B, however
World energy supplies are often measured in the unit of quadrillion British thermal units (1012 Btu), generally called a "quad." In 2015, world energy consumption is projected to be 5.81 ×1017kJ.
The hydrogen is recovered as its most stable oxide. When the oxide was made to decompose completely it released 1.274x10^25 molecules of oxygen gas.
How do you rationalize the ordering of the following pairs in the spectrochemical series
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