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What is the molar concentration of Fe2+ ion in an aqueous solution if 35.50 mL of 0.103 M KBrO3 is required for complete reaction with 11.00 mL of the Fe2+ solution? The net ionic equation is:
6Fe2+(aq)+BrO3-(aq)+6H+(aq)→6Fe3+(aq)+Br-(aq)+3H2O(l).
What is the molar concentration of As(III) in a solution if 24.95 mL of 0.115 M KBrO3 is needed to titrate 54.45 mL of the As(III) solution? The balanced equation is
3H3AsO3(aq)+BrO-3(aq)→Br-(aq)+3H3AsO4(aq)
What is the mass percent Fe in a 0.1855 g sample if 12.32 mL of a 0.1015 M Sn2+ solution is needed to titrate the Fe3+?
Express your answer using four significant figures.
The bond length of 13 Na 19F is 192.6 pm. calculate the value of B and the spacing between lines in the pure rotational spectrum of this molecule in unit of s^-1
How can you tell the difference between a joule of energy and a calorie of energy by looking at bars
Explain the solubility of AgCl(s) in water at 25 C is 1.33*10^-5 mol/L and its H of solution is 65.7 kj/mol. Explain what is its solubility at 45.6 C
A 100,000 gal tank is 75% full of liquid containing 60,000 lb of solid in suspension. Water flows into the tank at a rate of 20,000 gal/hr. Water and solids are drawn from the bottom of the tank at a rate of 14,000 gal/hr.
A first order decomposition reaction has a half-life of 60yr. What percentage of the original amount is left after 164years. (give answer to 3 sig figs using E notation)
Calculate the volume in milliliters of a 0.30 M acetic acid solution that contains 0.0142 mol HC2H3O2.
Calculate the pH of the solution that contains following compounds. Some relevant Ka values are Ka(CH3COOH)=1.7 X 10 ^-5, Ka(HNO2)=7.2X 10^-4, and Ka(NH4+) = 5.6 x 10^-10.
3.97 mL of 0.000010 M KOH are used to titrate 1.0 L of human blood. In this case, the titration was taken from a near neutral solution to a highly basic solution. What is the pH of the human blood
We add some solid silver chromate (Ag2CrO4, Ksp = 1.100x10-12) to a solution of 1.2202 M Li2CrO4. After equilibrium is achieved, what is the pAg (=-log[Ag+]) of this solution
1. An electron traveling at 5.8x10^5 m/s has an uncertainty in it's velocity of 3.00x10^5 m/s. What is the uncertainty in this position? 2. The smallest atoms can themselves exhibit quantum mechanical behavior. Calculate the de Borglie wavelength (i..
Compute the theoretical yield in grams for the Williamson ether synthesis of phenacetin. (Density of p-phenetidine is 1.065g/mL)
Consider the reaction: 2H2S(g)==2H2(G)+S2(g) An equilibrium mixture of this reaction at a certain temperature was found to have = [H2S]=0.602 , [H2]= 3.24×10^?2M , and [S2] = 7.84×10^?3 M. What is the value of the equilibrium constant at this temp..
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