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One of your experiments involved the determination of the equilibrium constant for the reaction Fe3+(aq) + SCN-(aq) = (FeSCN)2+(aq) ( = being equilibrium) A student pipetted 10.00mL of 2.50x10-3mol/L iron (III) nitrate solution and then 2.00mL of 2.50x10-3mol/L NaSCN solution into a 25mL volumetric flask and added water up to the mark. From the absorbance of the solution, the concentration of (FeSCN)2+ was found to be 3.46x10-5mol/L. Calculate the value of the equilibrium constant for this reaction.
An equilibrium mixture contains 0.750 mol of each of the products (carbon dioxide and hydrogen gas) and 0.200 mol of each of the reactants (carbon monoxide and water vapor) in a 1.00-L container.
Determining the free ions of calcium on a similar sample of blood. recommend if the sample requires pretreatment or if it can be calculated directly In each case.
What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.4x10^15Hz
What is the pH of a saturated solution of Ba(OH)2 at 25oC? For Ba(OH)2, Ksp=5.0x10-3.
To determine the percent acetic acid (mass percent) in a vinegar sample, you perform a titration using a 0.2508 M NaOH standard solution. A 20.62-mL volume of the NaOH solution is required to reach the endpoint in the titration of a 7.248 sample o..
depending on the type of chemical reaction molecular bromine br2 can be a source of br br- or brmiddota. provide a
Calculate the partition coefficient of butandioic acid between ether and water at 298K.
The half life for the radioactive decay of C-14 is 5730 years and is independent of the initial concentration. How long does it take for 25% of the c-14 atoms in a sample of C-14 to decay?
what percent of ca3po42 a major component of bone is ca and what mass of ca is present in 1 kg ca3po42? 3.46 how many
Consider the titration of 40.0 mL of 0.171-M of KX with 0.141-M HCl. The pKa of HX = 10.89. Give all pH values to 0.01 pH units. a) What is the pH of the original solution before addition of any acid
how many possible trisubstituted derivatives c6h3x2y can be obtained from the meta disubstituted benzene c6h4x2? (ignore directive effects of the substituents x and assume that all positions on the ring are accessible to the reagent y+).
draw structural formula for protien synthesis by the sugar arrangement using AATCGTATGG
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