What is the value of kb for this base
The pH of a 0.50M solution of a weak base is 11.4. What is the value of Kb for this base?
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An equal-tangent crest vertical curve is designed with a PVI at station 110+00 and a PVC at station 107+43.3. if the high point is station 110+75.5 what is the design speed of he curve?
What volume of a concentrated solution, which is 36.0% by mass and has a density of 1.179 , should be used to make 5.00 of an solution with a of 1.5?
What structural characteristics of polystyrene, polyacrylonitrile, and polytetrafluoroethylene have an effect on the melting and glass transition temperatures?
A student mixes 5.0 mL 2.00 x 10-3 M Fe(NO3)3 with 5.0 mL 2.00 x l0-3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.2 x l0-4 M. F
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?
A 0.12M solution of a weak acid HA has pH = 2.49. What is the Ka of this acid?
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