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Potassium hydroxide is used to precipitate each of the cations from their respective solution. Determine the minimum concentration of KOH required for precipitation to begin in each case. A) 2.0x10^-2M CaCl2 B) 3.0x10^-3M Fe(NO3)2
Determination of Molecular SO2 Needed for Protecting Wine, You have just finished fermenting a wine and the pH = 3.7. You need 2mg/L "molecular" SO2 to protect the wine. What level of free SO2 do you have to add to achieve the level of the molecul..
Write a balanced equation for the combustion of heptane, C7H16, in oxygen, , forming the products carbon dioxide, and water, H2O. How many grams of water will be produced by the complete reaction of 7.88 grams of heptane?
When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced. How many grams of calcium chloride will be produced when 27.0 g of calcium carbonate are combined
A 1.75 L container filled with CO2 gas at 25°C and 225 kPa pressure springs a leak. When the container is resealed, the pressure is 185 kPA and the temperature is 10°C. How many moles of gas were lost?
Give the cell diagram notation of the electrochemical cell that could be used to determine experimentally the dissociation constant (Kw) of water. The standard reduction potential for
A healthy stream has an oxygen concentration of 0.00850 g/L. Assuming no biological process affects this concentration, what must be the pressure of oxygen
Draw the Lewis structure for each of the following molecules or ions, and predict their electron-domain and molecular geometries.
While carrying out Part A, some of the solid calcium hydroxide is inadvertently transferred to the beaker and titrated. a. Will more, less, or the same amount of HCl be used for the titration? Explain.
The major isotopes of tungsten are 182W(26.32 %), 183W(14.31%0, 184W(30.67%), and 186W(28.62%) What is the atomic weight of W?
What volume of pure O2(g), collected at 27°C and 746 torr, would be generated by decomposition of 114 g of a 50.0% by mass hydrogen peroxide solution? Ignore any water vapor that may be present.
Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m^3 (assume the volume is well mixed throughout). The radon source emits 250 pCi/s
An energy maximum in a reaction-energy diagram would be labeled as which of the following?
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