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Suppose that a sample of pure water is saturated with gaseious CO2 to form a solution of carbonic acid. which response has the following species arranged in the order of decreasing concentrations at
1. HCO-, H2CO3, CO2-, H+ 33
2. H+, H2CO3, HCO-, CO2- 33
3. H2CO3, H+, HCO-, CO2- 33
4. CO2-, H+, HCO-, H2CO3
The equilibrium concentration of HA will be less than the stoichiometric concentration because some or all of HA ionizes.
Calcium reacts with iodine z=53. If a sample of the compound formed contains 7.4x10^21 calcium ions, how many iodine ions does it contain.
What mass of ethanol, C2H5OH a nonelectrolyte, must be added to 10.0 L of water to give a solution that freezes at -10.0C? Assume the density of water is 1.0 g/mL. Kf of water is 1.86C/m.
If I add 1.65 L of water to 112 grams of sodium acetate what is the molality of NaC2H3O2 in this solution?
Large jumps in ionization energy tend to occur whenever the removal of that electron disrupts an electron configuration ending in
A 0.1276 g sample of a monoprotic acid (molar mass=1.10 x 10^2) was dissolved in 25 mL of water and titrated with 0.0633 M NaOH. After 10 mL of base had been added, the pH was determined to be 5.57. What is the Ka for the acid
what is the mole fraction and b) what is the molality of this compound in the solution? the molar mass of the unknown compound is 45.0 g/mol
A 31.0 sample of an unknown H3PO4 solution is tritrated with a 0.120M NaOH solution. The equivalence point is reached when 26.43 mL of NaOH solution is added. What is the concentration of the unknown H3PO4 solution
Greg Corp. reportedrevenue of $1,100,000 in its accural basis income statement for the year ending June 30, 2007. Under the cash basis, gregg should report revenue of?
The change in enthalpy (delta S standard) for a reaction is -31.7 kJ/mol. The equilibrium constant for the reaction is 4.4×103 at 298 K. What is the equilibrium constant for the reaction at 644 K
How many nodal planes does a 4p sublevel contain and why. What is the possible set of quantum numbers for an electron with spin up in the 4d sublevel.
The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object (e.g., a crown) by placing it in water. How much water should be displaced by a pure gold object having a mass of..
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