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Calculate the concentration of all species at equilibrium in 0.01 M acetic acid in water at 25 ?. Given Ka of acetic acid is 10-4.7 and Kw is 10-14. 5% error is allowable if assumptions are made for simplification of calculation.
Determine the empirical formula and the molecular formula of a compound that has the compostion of 80.0% C and 20.0% H. The molecular mass is 240.6 g.
A 60-kg student traveling in a car with a constant velocity has a kinetic energy of 1.2 104 J. What is the speedometer reading of the car in km/h? What is the kinetic energy of a 20-kg dog that is running at a speed of 9.0 m/s (about 20 mi/h)?
The falling down of a piece of chalk (when the hand holding it is taken off) is an energy-controlled process, because there is no change in its entropy in the process.
which mixture would not be expected to be homogeneous. pentanol and hexane, KBr and water, acetic acid and methanol, ethylene glycol and water, octane and heptane
Calculate the heat evolved from a mixture of 14.6 L of sulfur dioxide at 1 atm and 294 K and 15 g of oxygen if the following reaction occurs: 2 SO2(g) + O2(g) ?? 2 SO3(g) ?H? = ?198 kJ
A TLC plate was run in 1:1 ethyl acetate and hexane, but when developed the plate only showed baseline spots. What change could be made to get the spot(s) to move further up the plate
What does the transition state theory attempt to describe about chemical reactions?
the carbon dioxide that is exhaled by astronauts who are on a space shuttle is scrubbed by pumping the air through
A 15.0-g sample of aluminum (specific heat = 0.902 J g-1 oC-1), initially at 95.0oC, is immersed in a 35.0-g sample of water (specific heat = 4.184 J g-1 oC-1), initially at 44.2oC, in an insulated container.
Palladium crystallizes in a face-centered cubit unit cell. Its density is 12.0 g/cm^3 at 27 degress C. Calculate the atomic radius of Pd.
Calculate the initial rate of polymerization and the molar mass of the poly (methyrl methacrylate) formed in the initial stages of the reaction given that the relevant rate cofficients at 60 degrees are:
Calculate the [H3O+] of a solution that has an [OH] of 0.000 0060M. Is the solution acidic, basic or neutral. Calculate the pH and pOH of a solution that has an H2O+ concentration of 1.3 x 10 -6M.
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