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How would the absorbance of the standard solution have been affected if 0.00050 M NaSCN had been used in place of 0.00040 M? if it changes, calculate the new absorbance based on your values.
A student is asked to prepare a buffer solution at pH=8.60 using one of the following weak acids HA (kA=2.7*10^-3), HB (Ka = 4.4*10^-6) and HC (Ka = 2.6 *10^-9).
Question- A chemist needs a buffer with a pH 3.50. How many mL of pure formic acid (density=1.220 g/mL) must be added to 325 mL of .0857 M NaOH solution to obtain such a buffer
the amount of heat released when 20 grams of water cools from 30 degrees celsius to 20 degrees celsius is how many
We know that the molar heat of vaporization is 39.3 KJ per mol and that the boiling point if 78.3 Celsius
Find the of % Nickel in the coin solution: molority of Nickel is .8469 density of coin solution as 1.00g/mL
usually some inception time is involved during the preparation of the Grignard. Explain the reason behind
A variety of different products could be formed in this reaction; for this problem assume all unique products are formed that only 1 Br is present in each alkyl halide product. how many of the potential alkyl halide products would have at least on..
This solution was examined and the instrument reply for the unknown was 1.69 times the signal due to the standard. In a separate experiment, it was found that for equal concentrations of element X as well as the standard the response for element X..
As space exploration increases, means of communication between humans and other planets are being developed
Depict the products of the subsequent reaction the acid-catalyzed dehydration of 1-pentanol to 2-pentene.
What should the analyst do to accuratley determine the concentration for the unknown using Beer's Law? Extending the calibration curve or using the equation for the line are not correct answers to this equation.
Assuming that a particular individual's stomach contains 1 quart of 0.1 M HCl, and that an antacid tablet contains as its active ingredient 500 mg of calcium carbonate, what would the final pH of this individual's stomach contents be after taking ..
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