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What are the [H3O+] and the pH of a propanoate buffer that consists of 0.47 M CH3CH2COONa and 0.12 M CH3CH2COOH? Ka of propanoic acid = 1.3 10-5.
What is the concentration of SO2. 2SO2(g)+O2(g)===2SO3(g) Keq=3.94 at 600 degress celsius
if the mass of the tablet analyzed from the previous question was 1.247 grams what is the mass effectiveness of the
Which is more concentrated with respect to sodium ions, 50g of NaCl in 500mL of solution or 59g of Na2SO4 in 500mL of solution
The free radical cholrination of propane yields a mixture of two monochlorination products, 1-chloropropane, and 2-chloropropane. Provide a mechanism for the following: the initiation step; the propagation step which lead to the products; five dif..
Compare and contrast the number of representative particles and the mass of UF6 with the number of representative particles and mass of CCl3CF3. Explain any differences you observe.
At least how many standard solutions would you need to make a calibration graph, assuming that the graph is expected to be a straight line
A 250.0-L cylinder contains 65.0% He(g) and 35.0% Kr(g) by mass at 25.0° C and 1.35 atm total pressure. What is the partial pressure of He in this container?
What is the nucleus with which an alpha particle can react to produce Lanthanum-133 plus four neutrons
Write down the balanced chemical equation when Fe 3 O 4 reacted with carbon monoxide and calculate mass of carbon dioxide that will be produced in this reaction if 234 g carbon monoxide is reacted with excess Fe 3 O 4 ?
Calculate the number of moles of electrons needed to produce 5.12g of copper from the electrolysis of a solution of CuSO4.
Compute the activation energy for this reaction when The half-lives were found to be 161 min at 199 Celsius and 12.5 min at 230 celsius? The isomerization of methyl isocynide follows first order kinetics.
A gas expands and does P-V work on the surroundings equal to 321 J. At the same time, it absorbs 189 J of heat from the surroundings. Calculate the change in energy of the gas in J.
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