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what would be the chemical equation to this problem? In an investigation of the reaction between copper(II) ions, Cu2+, and hydrazine, N2H4, in alkaline conditions the following observations were made: 25 mL of a solution containing 25 g/L CuSO4.5H2O was mixed with aqueous sodium hydroxide, NaOH. Then 25 mL of a solution containing 13 g/L N2H6SO4 was added. After the evolution of an inert gas had ceased, a fine orange-red precipitate was observed. This precipitate was removed and the excess hydrazine was found to be equivalent to 75 mL of 2.50 X 10-2 mol/L acidified potassium iodate(V), when the following reaction occurred: IO3- + N2H4 + 2 H+ ? N2 + I+ + 3 H2O Deduce the equation for the reaction between copper(II) ions and hydrazine in alkaline conditions. Atomic Masses: Cu = 63.55, S = 32.07, O = 16.00, N = 14.01, H = 1.01
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.100 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 9.00? kb for ammonia is 1.8*10^-5.
What is the difference between an amino acid and a protein? How does this difference in structure affect biological function?
A solution is prepared by mixing 87.0 mL of 5.00 M HCl and 36.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+ ], [OH - ], and the pH for this solution.
If each mole of gas occupies 55 L under the conditions of the explosion, how many liters of gas are produced? c) how many grams of N2 is produced in the detonation?
The concentration of phosphoric acid in Coke is approximately 106.0 mg/mL. Assuming phosphoric acid is the only acid in Coke, calculate the pH of a 355 mL can of Coke.
An enzyme reduces the activation energy of a reaction at the temperature of 25 degree celsius from 55 kjmol-1 to 15kJ mol-1 by changing the route of the reaction.
While shutdown, the core accidentally went critical and the reactor pressure vessel rose in temperature and was hot for two hours, but all instrumentation has failed and no one is sure what the temperature was.
water can react with an acid or a base to produce two different products. draw the structure of each and label products
Calculate percent recovery of panacetin from the individual masses of its mictures, sucrose (.044g), aspirine (.093), and the unknown (.339).
If a mixture of 41.25 g of aluminum and 58.83 g of oxygen reacts, what mass of aluminum oxide can be formed?
A creature moves at a speed of 3.20 furlongs per fortnight (not a very common unit of speed). Given that 1 furlong = 220 yards and 1 fortnight = 14 days
A system had 150 kJ of work done on it and its internal energy increased by 60 kJ. How much energy did the system gain or lose as heat?
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