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Question- Boric acid has pKa=9.23. What are the equilibrium concentrations of each species in .115M H3BO3 solution?
Please carry out what you can and illustrate your work so I can follow. Thanks
If cost per gram were not a concern, which of the following substances would be the most efficient per unit mass for melting snow from sidewalks and roads. Explain.
A beaker with 100 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M . A student adds 6.50 mL of a 0.260 M HCl solution to the beaker. How much will the p..
What is the percent yield of a reaction where 15.3g of oil of wintergreen is collected after 16.3g salicylic acid
radioactive isotopes often occur together in mixtures. suppose a 190 sample contains with a half-life of 12 days and
Problem- A chemical reaction where 2-bromobutane is first reacted with triphenylphosphine and the product is then treated with sodium ethoxide
some kcl is dissolved in water 25degc where it completely dissociates. the vapor pressure of pure water at 25degc is
All living things contain carbon. Most of this carbon is stable carbon-12. However, a small percentage will be carbon-14, a radioactive isotope of carbon that decays with time
Acetic Acid has a Ka of 1.8 X 10^-5 What is the pH of a buffer solution containing 0.17 M hC2H3O2 (acetic acid) and 0.18 M C2H3O2- Express answer using two decimal places.
If a system has 3.50 × 102 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its surroundings, what is the change in internal energy of the system
0.46mol of argon gas is admitted to an evacuated 30cm3 container at 60c. the gas then undergoes an isochoric heating to
If the densities of 20%, 50% and 70% solutions are 0.69 and 0.58 and 0.49 g/mL, respectively, and the denisty of the unknown solution is 0.50 g/mL, what is the approximate concentration of the unknown solution.
an infinitely sharp zone of solute is placed at the center of acolumn at time t 0. after diffusion for time t1 the
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