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Using an aqueous solution of 75.00 mL of HCOOH is titrated with a 0.150 M sodium hydroxide(aqueous solution ).after observations it is found the NaOH solution of that 21.25 mL is required to reach the equivalence point.. compute the pH if NaOH solution of the 10.00 mL has been mixed. pKa of HCOOH = 3.74
Determine the trend in sizes of the ions O 2- ,N 3- , F - and also explain why does the trend exist? Also describe which of the molecules contains polar covalent bonds but is NOT itself a polar molecule?
When 31.7mL of 0.235M Potassium hydroxide is required to completely neutralize 26.0mL of a HC 2 H 3 O 2 solution, calculate the molarity of the acetic acid solution.
Explain would the calculated molarity of NaOH be too high or too low If the KHP weighed in your experiment today was contaminated with some unknown inert substance.
Have you observed that when you spill water over your skin on a hot day it will cool you down but if you spill vegetable oil in place of water it will not cool you down give explanation for this difference?
Determine how much dolomitic lime(is an anhydrous carbonate mineral composed of calcium magnesium carbonate CaMg(CO 3 ) 2 ) is required to apply to raise the pH to 7.0?
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
By Solving this problem student is able to understand how to calculate theoretical and percent yields in an experiment - determine theoretical and percent yields for this experiment.
If a sample of sodium is dropped into a container of water the reaction is:
What is the pH of the solution if [OH-] of an ammonia solution is 1.0 X 10-2M?
What substance is in excess? D) How many grams of the excess reactant is leftover (remaining) after the reaction stops
Determine the mass percentage concentration of a sodium hydroxide solution produced by mixing 50.0 mL of a 25 % (density=2.45g/mL) sodium hydroxide solution with 10.0mL of H 2 O?
Calculate how many such photons are emitted per second by a 80.0-W incandescent lightbulb if we Assume that the light has an average wavelength = 510.0 nm, .
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