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Calculate the initial concentrations of [SCN-] IONS and Fe3+ ions when a solution was prepared by mixing 3.00 more of 0.00280 M KSCN, 6.00 more of 0.250 M Fe(NO3)3 and 16.00 more of 0.050 M HNO3
a reaction has a rate law rate kab2. what is the overall order of the
What is the total pressure, in mmHg, of a gas mixture containing argon gas at 0.25 atm, helium gas at 350 mmHg, and nitrogen gas at 360 torr
For many years drinking water has been cooled in hot climates by evaporating it from the surfaces of canvas bags or porous clay pots. How many grams of water can be cooled from 40.°C to 19°C
What is the equilibrium constant Kc for the reaction below. Assume temperature is 25oC. (Hint, Represent the reaction below as a sum of reactions and then combine the corresponding K values to obtain Kc for the reaction below.) HF(aq) +NH3(aq) N..
diluted with pure air to reduce the methane concentration to the lower flammability limit . calculate the rquire flow rate of air in mol/h and the precent by mass of oxygen in the products gas
Copper(II) iodate precipitates from iodate solution. The formula of the precipitate is CU(IO3)2. A saturated solution of this substance was made in 0.01 M KIO3.
Determine the final concentration if A 129 mL portion of that solution is diluted using water of 149 mL.
A mixture is prepared by adding 22.7 mL of 0.157 M Na3PO4 to 31.2 mL of 0.277 M Ca(NO3)2. (a) What mass of Ca3(PO4)2 will be formed? (b) What will be the concentrations of each of the ions in the mixture after reaction?
Discuss the phase changes that occur in the liquid solid and liquid vapor boundary. Describe how the locations of phase boundaries are obtained. Discuss any assumptions used in the Clasius Clapeyron equation.
A gas expands and does P-V work on the surroundings equal to 327 J. At the same time, it absorbs 121 J of heat from the surroundings. Calculate the change in energy of the gas.
How many milliliters (to two decimal places) of a 0.919 M H2SO4 solution must be used to make 300.0 mL of a 0.100 M H2SO4 solution
A buffer solution is made by making a 100 mL aqueous solution containing 2.6 grams of citric acid (C6H8O7) and 6.4 grams of potassium citrate (C6H7O7K). What is the pH of this buffer solution
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