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a sample of Mg was burnt in air to give a mixture of Mgo and Mg3N2 . The ash was dissolved in 60 Meq of Hcl and the resulting solution was back titrated with NaOH . 12Meq of NaOH were required to reach the end point. An excess of NaOH was then added and the solution distilled . the ammonia released was then trapped in10 Meq of second acid solution. Back titration of this solution required 6 Meq of the base . Calculate the % of Mg burnt to the nitrate.
A sodium hydroxide solution was standardized by titrating 26.50 ml of 0.1250 M standard hydrochloric acid. The initial buret of sodium hydroxide was 1.24 ml and the final was 33.26. What is the molarity of the base solution
a mixture of helium and neon weighing 5.50g occupies a volume of 6.80 l at 300 k and 1.00 atm. calculate the
Calculate the value of the reaction quotient Q. (b) Is the system at equilibrium? If not, predict which way (right or left) the reaction will proceed to reach equilibrium.
Calculate the wavelength of the absorption maximum for a metal complex ion that has a crystal field splitting energy of 279 kJ/mol. The final answer should be in nm.
if 50.00ml of Ba(OH)2 solution is mixed with 30ml of HBr solution, what is the pH of the resulting solution. (0.1385 M Ba(OH)2 and 0.2050 M HBr).
In the catalytic converter of an automobile exhaust system, some SO2 is converted to SO3 by the reactionSO2(g) + ½ O2(g) ? SO3(g)
The barium salt was found to have two mole of water of hydration per Ba ion and the acid is mono basic. What is molecular weight of anhydrous acid.
What is the dissociation constant, Kd, of a ligand with a percent occupancy (or fractional saturation) of 20% when [ligand]
What is the minimum external voltage must one supply in orger to perform the electrolsis of molten CaCl_2(l)? Suggest a means for supplying this energy.
What are the partial pressures of N2 and H2O. A miniature volanco can be made in the laboratory with ammonium dichromate. When ignited, it decomposes in a fiery display. (NH4)2Cr2O7(s)
Explain what volume of fuel should you bring? Presume the following the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water (the rest is lost to the surroundings), the density of the fuel is .78g/..
What volume of 0.140 M Hydrochloric acid is required to neutralize 2.68g of Magnesium hydroxide.
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