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Problem- 5.00 mL of stock solution of 1.00 x 10^-4 M (0.0001 M) aqueous iodine was added to 10.00 mL of 0.5 KI solution. How do you calculate the concentration of triiodide in diluted solution?
Express your answers to three significant figures separated by comma.
Determine the of a solution that is 1.85% by mass. Assume that the solution has density of 1.01
Predict the wavelength (in nm) of the lowest-energy electronic transition in the following polymethine ion:((CH_{3})_{2}N^{+}=CH-CH=CH-CH=CH-N(CH_{3})_2) Assme that all the C-C and C-N bond lengths equal
Given that mercury has a Hvap of 59.11 kJ/mol and its normal boiling point is 356.7°C, calculate the vapor pressure in mm Hg at room temperature, 25°C.
a solution is prepared by diluting 225 ml of 0.1885 m aluminum sulfate solution with water to a final volume of 1.450
a fluid flows axially in the annular region between two concentric pipes with radii r1 and r2 gt r1 respectively.
The substance Y solution now has a concentration of 25 mg/L. Explain what is the mass of substance Y that is adsorbed to the GAC. Explain what is mass to mass ratio of the adsorbed substance Y to GAC in mg/kg at this equilibrium concentration
a 4.50 gram sample of LiCl at 25.0 dissolves in 25.o ml of water also at 25.0 Celsius. the final equilibrium temperature of the resulting solution is 60.8 Celsius. what is the enthalpy of solution, delta Hs of LiCl expressed in kilojoules per mole..
Determine the enthalpy for this reaction: \rm 2NaOH (s)+ CO_2 (g) \rightarrow Na_2CO_3 (s) + 2H_2O (l) Express your answer in kilojoules per mole to four significant figures.
If and electron makes a transition from n=2 to n=1, what will be the wavelength of the emitted radiation
Calculate the mass percent of methanol, ethanol, and MTBE, that must be present in gasoline to yield a mixture of 1.8% oxygen by weight.
A piston exerting a pressure of 1.00 atm rests on the surface of water at 25 degrees C. The pressure is reduced reversibly such that 10.0 g of water evaporated and adsorbed 22.2 kJ of heat. Calculate w, q, change in U and change in H.
In moist air the lighter water molecules have a greater rms average speed than the heavier nitrogen molecules. Compute the difference in the two average speeds at 30C
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