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What's the molar solubility (s) of barium iodate in 0.365 M aqueous sodium iodate? Explain why assumptions are fine. If barium iodate were in water, which has a higher molar solubility and why solub
10 mL aliquots of natural water were pipetted into 50 mL flasks. Exactly 0.0, 0.5. 10.0, 15.0, and 20.0 mL of a standard solution containing 11.1 ppm of Fe were added to each, followed by an excess
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O is 75.2 J/mol*K and that the heat capacity of H2O is 37.7 J/mol*K, calculate the heat of fusion of water at -10
The following reaction comes to equilibrium at 800 K. At equilibrium the partial pressure of CO is 10.0 atm and the partial pressure of CO2 is only 2.5 x 10?? atm.
ON a dry day, your body can accumulate static charge from walking across a carpet or from brushing your hair. If your body develops a charge of -15 microcoulombs, how many mass electrons has it acq
Naturally occurring iodine has an atomic mass of 126.9045. A 12.3849-{\rm g} sample of iodine is accidentally contaminated with 1.00070 {\rm g} of ^{129}{\rm I}, a synthetic radioisotope of iodine
What is the concentration of dissolved sulfate in the water once equilibrium is achieved? If additional 10 grams is added, what would be the new equilibrium concentration of calcium sulfate?
A solution prepared by dissolving 17.75 grams of sulfuric acid,(98.10g/mol), in enough water to make 100 ml of solution. if the density of the solution is 1.1094g.ml what is the molality and molari
A solution of sodium bicarbonate is prepared by adding 45 g of sodium bicarbonate to a 1.00L volumetric flask and adding distilled water until it reaches the 1 L mark.
A .21 m^3 drum contains 100L of a mixture of several degreasing solvents in water. The concentration of trichloroethylene in the headspace (gas phase) above the water was measured to be .00301 atm.
Write a balanced equation that shows the reaction of iron with oxygen to form iron oxide, which may be written Fe2O3. Then write a description of what you would observe as a piece of iron rusts.
One way to reduce the formation of acid rain involves trapping the SO2 by passing smokestack gases through a spray of calcium oxide and O2. The product of this reaction is calcium sulfate.
The common pain relievers asprin (C9H8O4), acetaminophen (C8H9NO2) and naproxen sodium (C14H13O3Na) are all available in tablets containing 200.0 mg of the active ingredient.
The isothermal compressibility of lead is 2.21x10^-6 atm^-1. Express this value in Pa^-1. A cube of lead of side 10 cm at 25C was to be inserted in the keel of an underwater exploration TV camera, a
One mole of an ideal gas is expanded at T = 300 K from a volume of 1.00 liter to a volume of 10.00 liters against a constant external pressure of 1.00 atm. How much work is performed on the surround
The thermal decomposition of N2O5 obeys first-order kinetics. At 45 degrees Celcius, a plot of ln(N2O5) versus t gives a slope of -7.10 * 10^-4 min^-1. What is the half life of the reaction?
A mixture of potassium chloride and potassium bromide weighing 3.595 g was heated with chlorine which converted the mixture completely to potassium chloride.
Using the heats of vaporization for at 25 = 44.02 , at 100 = 40.67 , calculate the entropy change for the vaporization of water at 25 and at 100 .
Describe what is meant by part per million and part per billion. Compare and contrast the normal definition when referring to a liquid and gas?
The Henry's law constant for hydrogen in water at 25 C is 7.8 \times 10^ 4 mol/L *atm. Estimate the number of moles of hydrogen gas that remain dissolved in the solution.
A 9.528 quantity of zinc was allowed to react with 40.00 of sulfuric acid that had a density of 1.3028 . The reaction yielded gas and a solution of zinc sulfate.
A sample consisting of various gases contains 3.8×10-6 mole fraction of radon. This gas at a total pressure of 34 atm is shaken with water at 30C. Calculate the molar concentration of radon i
What is the volume in the beaker with the aqueous solution of a nonvolatile nonelectrolyte when equilibrium is attained, assuming ideal behavior?
Calculate the formal concentrations of acetic acid and sodium acetate necessary to prepare a buffer solution of pH 5 that is 0.2 M in total acetate. The pk of acetate is 4.76.