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The iron content of iron ore can be determined by titration with standard KMnO4 solution. The iron ore is dissolved in excess HCl and the iron reduced to Fe+2 ions. This solution is then titrated with KMnO4 solution, producing Fe+3 and Mn+2 in acidic solution. If it requires 41.95 mL of 0.0205 M KMnO4 to titrate a solution made with 0.6128 g of iron ore, what percentage of the ore was iron?
Although the double bond, in total, is stronger than a single bond, the pi bond itself is weaker and can react with electron-deficient species such as a hydrogen ion.
reacts completely with a volume of F2(g) to produce 2.0 L of ClF5. what volume of F2(g) reacted completely?
an aqueous cacl2 solution has a vapor pressure of 82.1 mmhg at 50 c . the vapor pressure of pure water at this
The heat of combustion of hexane is 995.0 kcal/mol. How much energy is released during the complete combustion of 453 grams of hexane ?
The volume of a unit cell of diamond is .9454 nm^3 and the density of diamond is 3.52 g/cm^3. find the number of carbon atoms in the unit cell of diamond
She then took 15.0 mL of the stock solution and diluted it with enough water to make 65.0 mL of a final solution. What is the concentration of KOH for the final solution.
What mass of sodium cyanide must be added to 250ml of water in order to obtain a solution having a pH of 10.50? Ka(HCN) = 4.9 x 10 ^-10
If an aqueous solution of Co(NO3)2 has a molar absorptivity of 5.10 L/mol.cm at 505 nm. What will be the absorbance of a 0.075 M solution
A reactant R is being consumed in a first-order reaction. What fraction of the initial R is consumed in 4.0 half-lives
Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3 NO2(g) + H2O(l) -→ 2 HNO3(l) + NO(g) If 927 L of NO2 gas react with water, what volume of NO gas will be produced? Assume the gases are measured under the same c..
Commercially available concentrated sulfuric acid is 18M. calculate the volume of this acid that is required to prepare
Its value has been accurately determined to be 3226.7 KJ/m. When 3.0285g of benzoic acid are burned in a calorimeter, the temperature rises 3.84 degrees Celsius. What is the heat capacity of the bomb
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