What is the ka of this acid
A 0.12M solution of a weak acid HA has pH = 2.49. What is the Ka of this acid?
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The pH of a 0.50M solution of a weak base is 11.4. What is the value of Kb for this base?
Dinitrogen pentoxide decomposes in the gas phase to form nitrogen dioxide and oxygen gas. The reaction is first order in dinitrogen pentoxide and has a half-life of 2.81 hours at 25 degrees Celcius.If a 1.3 L reaction vessel initially contains 750
Many years ago, well-known architect Frank Lloyd Wright designed a mile-high skyscraper, which has never been built. Suppose that in such a building, steam for the heating system enters a pipe at ground level as saturated vapor at 2
A wave in the ocean has amplitude of 3m. winds pick up suddenly, increasing the wave's amplitude to 6m. how does the change in amplitude affect the wave's frequency and the amount of energy it transports?
if 25.00 cm3 of 0.1000M NaCl is mixed with 25.00 cm3 of 0.1000M AgNO3, what is the concentration of Ag+ remaining in solution? Is this sufficient to precipitate any silver chromate?
A student mixes 5.00 mL 2.00 x 10-3 M Fe(NO3)3, 2.50 mL 2.00 x 10-3 M KSCN, and 2.50 mL H2O to give a solution having a total volume of 10.00 mL. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 7.50 x 10-5 M. What is the
Calculate the pH of a buffer made with 0.50M phosphoric acid and 0.75M sodium dihydrogenphosphate. Ka = 7.5 x 10-3.
Water with a static pressure of 1.96kN/M2 flows through an 800 mm diameter pipe. A pitot tube pressure gage in this pipe reads a pressure of 5.88 kN/M2. How do you determine the volume flow rate (Q) of the water? (Q = 1.40 M^3/sec, V=2.79 M/sec)
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