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Potassium permanganate, KMnO4, is a powerful oxidizing agent. The products of a given redox reaction with the permanganate ion depend on the reaction conditions used. In basic solution, the following equation represents the reaction of this ion with a solution containing sodium cyanide:
MnO4-(aq)+ CN-(aq)} = MnO2(s)+ CNO-(aq)Since this reaction takes place in basic solution, H_2O(l) and OH^-(aq) will be shown in the reaction. Places for these species are indicated by the blanks in the following restatement of the equation:
MnO4-(aq)+ CN^-(aq)+______ = MnO2(s)+ CNO-(aq)+________
What are the coefficients of the reactants and products in the balanced equation above? Remember to include H2O(l) and OH^-(aq) in the blanks where appropriate.
A 41 kg person drinks 250. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 17% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
An ascorbic acid supplement was analyzed by titrating a 0.1000g sample dissolved in water with 0.0200M NaOH. A volume of 15.20 mL of the base was required to completely neutralized the ascorbic acid. What was the percentage by mass of ascorbic aci..
Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, CF4 via the reaction
If a 100.0 g sample of water at 60.0 degreesC is added to a 100.0 g sample of water at 10.0 degrees C, determine the final temperature of the water.
Protons can be accelerated to speeds near that of light in particle accelerators. Estimate the wavelength (in nm) of such a proton moving at 2.90 X 108 m/s. (Mass of a proton=1.673 X 10-27 kg)
An iron bar of mass 781 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by metal.
How many litersof hydrogen gas will be produced by the decomposition of 90 L of water
The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3 J/ (K x mol) for the liquid and 33.6 J/ (K x mol) for the vapor.
A 25.0mL sample of HCl solution is titrated with a 0.139 M NaOH solution. The equivalence point is reached with 30.2 mL of base
A 275-g sample of nickel at 100.0C is placed in 100.0 mL of water at 22.0C. What is the final temperature of the water.
Determine the new pressure of the gas and express your answer in Pa
A peanut is burned in a calorimeter made from an aluminum can. The peanut weighed 0.780 g before combustin and .054 g after combustion. The temperature change of aluminum can filled with 200 ml of water was 15.3. (Density of water = 1.00g/C)
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