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the reaction of potassium superoxide, ko2, is used in life support system t replace co2 in expired air with o2.
4ko2 + 2co2= 2k2co3 + 3o2
how many mols of o2 are produced by the reaction of 156g of co2 with an excess of ko2
At what pH will an aqueous solution of 0.210 M Mn2+ begin to precipitate as Mn(OH)2 at 25 °C? The Ksp for Mn(OH)2 is 1.9 x 10-13
A saturated solution of NaNO3 in 100 grams of water at 40 degrees celcius is heated to 50 degrees celcius. What is the rate of increase in solubility in grams per degree?
hydrogen is collected over water, two gases are present hydrogen and water vapor.calculate partial pressure of hydrogen gas. Barometric pressure = 773.94 mmhg.
A mixture of 8.50 g He and 26.5 g Ne has a pressure of 880. mm Hg. What is the partial pressure of each of the gases?
What is the molarity of urea, CO(NH2)2, if 98.3 mg of the 97.9% pure solid is dissolved in 5.00 ml of aqueous solution?
A 50.00-mL sample of .1000 M KOH is titrated with .287 M HNO3. Calculate the pH of the solution after 52.00 mL of HNO3 is added.
Using the Henderson-Hasselbalch equation determine the pKa for illinic acid from the following values: At pH 9.02, the concentration of illinic acid and its conjugate base
Using the same sample of gas ( = 275 , = 43 ), we wish to change the pressure to 2750 with no accompanying change in volume or amount of gas.
calculate the amount of energy in kilojoules needed to change 153g of water ice at -10 C to steam at 125 C.
A voltaic cell consists of a strip of cadmium metal in a solution of Cd(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution
Calculate the amount of heat required to heat a 3.6 kg gold bar from 25 C to 64 C. Specific heat capacity of gold is 0.128 j/g C.
If 1.00 g sodium bicarbonate and 1.00 g citric acid are allowed to react, how many grams of carbon dioxide will form?
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