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Using the Extended DH Equation, we calculate the activity coefficient, ?, of an ion in solution as, -log ? = [ 0.253 ± 0.008]/ [ 3.50 ± 0.03]. What is the error in ? if the principal uncertainties are in the ionic size and the ionic strength. The errors above are ? values
Determine the rate constant for each of the following first-order reactions. In each case, write the rate law for the rate of loss of A. a) 2 A B + C
A 20.0 mg sampele of a pesticide with a molecular mass = 385.91 was dissolved in a 5 mL volumetric flask. a 2.00 mL aliquot was withdrawn & placed in a 25 mL volumetric flask, and diluted to the mark.
A zero-order reaction has a constant rate of 1.00×10-4 . If after 80.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration.
What mass of AlCl3 can be formed from 5.000 mol NiCl2 and 2.000 mol Al?
Provide the Mechanism when 50% Methanol/Water solution is used in simple distillation to extract the Methanol
A power company burns approximately 474 tons of coal per day to produce electricity. If the sulfur content of the coal is 1.30% by weight.
The following results were obtained for the determination of sulfur in a coal sample. The average for 4 trials was 1.94 %S with a standard deviation of 0.04 %S. Based on these data, report the 95% confidence limits for the average sulfur content.
if it takes 1656 kj/mol to break all bonds in methane, what is the bond empathy of one C-H bond?
If the total pressure in the flasks is 311 torr after the stopcock is opened, determine the initial pressure of N2 in the 1.00 L flask.
Explain why it would have been inadvisable to supply hydrogen and sodium in elemental form and why it is not neccessary.
What common mono-positive ions will coprecipitate with barium sulfate in the determination of soluble sulfate
Calculate the pressure exerted by 1.0 mol C2H6 behaving as (a) a perfect gas, (b) a van der Waals gas when it is confined under the following conditions: (i) at 273.15 K in 22.414 dm3, (ii) at 1000 K in 100 cm3.
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