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What compound could be added to a 0.10 M KC2H3O2 solution to make it an effective buffer. Also, write a balanced chemical reaction for the addition of H3O+ and OH- to this buffer.
What molarity of aqueous aluminum sulfate solution can be expected to show the same conductivity as 0.030 M Na2SO4 at 36,000 units?
A 2.30-g sample of a large biomolecule was dissolved in 16.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
A 0.75-L bottle is cleaned, dried, and closed in a room where the air is 24°C and 50.% relative humidity (that is, the water vapor in the air is 0.5 of the equilibrium vapor
The Cu-Ni system is an isomorphous one, meaning that the crystal structure does not change with alloying; in particular, Cu and Ni atoms randomly substitute for one another within a FCC crystal structure
A gas-filled balloon having a volume of 2.50 L at 1.2 bar and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final v..
Determine how many grams of Potassium Sulfate can be formed from 150.0 grams of potassium hydroxide with sufficient sulphuric acid H2SO4?
A solution containing Pt4+ is electrolyzed with a current of 4.20 A. How long will it take to plate out 65% of the platinum in 0.50 L of a 0.010 M solution of Pt4+
How many kilograms of acetic acid needs to dissolve 94 grams of potassium chloride if the freezing point changed 19.6 degrees celcius?
Calculate the molarity for: A.0.5g CO2 in 652 g of water. B. 56g of NH3 in 500 g of water. C. 3.21 g of NaOH in 3405 ml of water.
determine the rate law and rate constant for the gas-phase reaction of nitrogen monoxide and chlorine.
Discuss two ways that ammonium compounds decompose when they are heated. What chemical reaction is involved in the thermal decomposition of ammonium persulfate?
At room temperature (20), milk turns sour in about 65 hours. In a refrigerator at 3, milk can be stored three times as long before it sours. What is the activation energy of the reaction that causes the souring of milk?
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