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A.- An old tablet of vitamin C weighed 1.022g. It was dissolved in 500mL water, and a 25.0mL aliquot of this solution required 22.6mL of .005M I2 solution to oxidize it. Calculate the mg vitamin C in the tablet. B.- The strenght of an I2 solution may be verified by reacting the I2 with thiosulfate (S2O3)2- I^2+2(S2O3)^2- -> 2I^-+(S4O6^)2- 15.0 mL of an iodine solution of unknown molarity was titrated against a 0.001M solution of S2O3^2-. The blue black iodine-starch complex just disappeared when 20.2 mL of thiosulfate was added. What is the exact molarity of the I2 solution?.
At what temperature does water boil on the top of Mount Everest, elevation z=8848m. Recall that the dependence of pressure with altitude is given by P=Patmexp^(-MWgz/RT) where, Patm is atompheric pressure, g is the gravitational acceleration, and ..
Lipitor blocks production of chlosterl in the liver. In addition to this reduction of the serum level of cholsterol, HDL acts to remove LDL from the bloodstream. How might this occur?
What is the molarity of a solution containing 1.35 mol H2SO4 in 245 mL of solution
Predict the major and minor products of the following reaction. Name the products using systemic names. CH3CH2CH=CH2+H20->H+
The following reaction is endothermic in the forward direction. NH4Cl(s) NH3(g) + HCl(g) For each of the following cases, briefly explain whether the action causes net reaction from left to right, right to left, or no net reaction.
How much heat (in kJ) is evolved in converting 1.00 mole of steam at 145 C to ice at 0 C)? (The heat capacity of ice is 2.09 J/g C and the heat of vaporization of water is 32.9 kJ/mol)
If you added 75ml of a 0.555M solution of NaCl to enough water to produce 950 ml of solution, what would be the resulting molarity?
Calculate the fraction of Fluorine atoms at 1000 K in each of the first three electronic levels based upon the following data
What is the concentration of protein A in the filtrate, as well as the concentrations of proteins B and C in the filtrate and retentate?
A 4.50-g sample of LiCl at 25.0 C dissolves in 25.0 mL of water also at 25 C. The final equilibrium temperature of the resulting solution is 60.8 C.
These two substances reach thermal equilibrium at a temperature of 64.2 degree celsius. If the specific heat capacity of substance "B" is 1.17 J / g-C, what is the specific heat of substance "A". (assume no heat is lost to the surroundings)
Determine all equilibrium concentrations, the pH, the pOH and the percent ionization of each of the following acids in water.
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