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Question- A laboratory manager wants to prepare 500.00 mL of a buffer with a pH of 5.280 from equimolar solutions of CH3CO2H (Ka = 1.800e-5) and LiCH3CO2. What volume of the CH3CO2H solution would be required?
State your answer by means of three significant figures.
ammonia is completely decomposed to nitrogen and hydrogen, as in question B). At the end of the experiment the pressure of gas mixture is 866mmHg. calculate the partial pressures of N2 and H2.
provide the correct molecular geometry by its English name and by drawing the proper stucture. Use a three dimensional drawing.
purified a new protein and find that it contains 0.154 percent Mn. Assuming that there are three atoms of manganese per molecule of protein, what is the molar mass of the protein
A 34 mL sample of HCl was triated with .58 M NaOH. Three drops of phenolphthalein was added to the HCL solution. If the HCl solution changed color after 72mL of NaOH was added. Compute the molarity of the HCl Solution.
Suppose that the microwave radiation has a wavelength of 12.4cm . How many photons are required to heat 275mL of coffee from 25.0 ?C to 62.0 ?C?
Consider 0.10 M solutions of the following substances. Rank the solutions in order of increasing pH where 1 is the solution with the lowest pH and 7 is the solution with the highest pH.
What is the concentration of the solution which results when 50.0 mL of 1.0 M CuCl2 solution is mixed with 100 mL of 4.0 M CuCl2 solution
An alkyne of six carbon atoms gives the same single product in its reaction either with BH3 in THF followed by H2O2 /OH-, or with H2O/Hg2
explain why the pure solvent shows a level horizontal curve as solidification occurs but the curve for the solution
What volume of .100 M NaCl is needed to react completely with 5.00mL of .200 M Pb(NO3)2.
Define what this value means in terms of the base strength of aniline in water. Will aniline appear to be stronger or weaker base in acetic acid as a solvent compared to water as the solvent. Explain.
Calculate the amount of heat liberated when 4.80 g CH4 reacts with an excess of oxygen.
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