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How many moles of water are formed when 50 mL of NaCl and 50 mL of NaOH are combined in a coffee cup calorimeter (molarity of solns= 0.1)
The acid dissociation constant (Ka) of caffeineH+ is Ka = 0.25 M. If a cup of tea has a pH of 7.6, what should be the ratio of concentrations of caffeineH+ to unprotonated caffeine in the tea
A second 20ml aliquot was mixed with 10ml of 50ppm quinine solution before dilution to 100ml. The flourescence intensity of this solution was 600. Calculate the concentration in ppm in the tablet.
Write the structure for the organic reagents and products, name the products and indicate stereochemistry when appropriate
Assume that RNA polymerase will read the top strand of DNA as the "template" to synthesize mRNA. What will be the sequence of the mRNA synthesized?)
c6h5nh3cl is a cation chloride salt with acid. a if 50.0 g of c6h5nh3cl are dissolved in water to prepare a solution
In the manufacturing of computer chips cylinders of silicon are cut into thin wafers that are 3.00 inches in diameter and have a mass of 1.50 g of silicon
What is the pH of a solution in which 258 mL of HCl(g), measured at 27.5^circ C and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
Explain why the fluoride ion of the terabutylammonium flouride is more nucleophilic than the fluoride ion of sodium fluoride. Draw reaction-energy diagrams to illustrate. Define the term, "diastereospecific reaction," and give a representative exa..
If the diameter of a sodium atom is 3.14×10-8 , how many sodium atoms would fit along a line exactly 2.00 inch long?
find the vapor pressure of water solution in which the molefraction of HgCl2 is 0.163 at 25 degrees celcius.
Using activity coeffient, calculate the pH of a 0.001M HCl solution. If you add a 0.010M solution of NaCl to this solution, will the pH increase, decrease or remain the same
A 27.0 L sample of nitrogen at 7.85 atm and 27 deg Celsius is simultaneously expanded to 63.4 L and heated to 35 deg Celsius. What is the new pressure of the gas
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