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Acetic acid has a Ka of about 2*10^(-5). A buffer is to be prepared with a pH of 4.5 from 0.1M solutions of sodium acetate and acetic acid. How many mL of 0.1M NaAc would have to be added to 100mL of 0.1M HAc to make the proper buffer solution?
A gaseous organofluorine compound has a density of 0.496 g/L at 17 deg. C and 189 mm Hg. What is the molar mass of the compound
Determine the number of grams of sodium acetate and the amounts in mLs of 6.00M acetic acid that you would need to make 50.00mL of a sodium acetate/acetic acid buffer solution at the pH equal to 5.00 in order to make a final concentration of 0.05M..
Indicate the kind of hybridization (sp, sp2, sp3) you expect for each carbon atom in the following molecule. Why does each carbon atom have that hybridization?
liquid octane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. suppose 74 grams of octane is mixed with 148 grams of oxygen
hydrochloric acid was added to a 50.00 mL solution containing your sodium carbonate unknown. calculate the pH of the solution at the second equivalence point.
Estimate the Debye Temperature of gold form the following information. For gold, the atomic weight is 197, the density is 19000 kg/m^3 and the velocity of sound is 2100m/s.
Write chemical equations for the reaction of calcium with the following substances, making sure that the numbers and kinds of atoms are the same on both sides of the equations.
What is the total alkalinity of water in mg/L as CaCO3. Determine the species and the quantity of each of the species if the pH 8.3 equivalent point is reached after adding 15mL of acid.
The solubility products of PbSO4 and SrSO4 are 6.3 * 10^-7 and 3.2 * 10^-7, respectively. What are the values of [ SO4 2-], [Pb 2+], and [Sr 2+] in a solution at equilibrium with both substances
A piece of copper has a volume 640 L. How many atoms does the sample contain.
what volume of 420 ml of hydrogen occupy if the temperature is raised from 0 C to 95 C?
Choose the answer which gives the electron-domain geometry and molecular geometry which are both correct for TeF4.
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