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A lactic acid/lactate ion buffer solution contains 0.31 M HC3H5O3 and 0.90 M C3H5O3-, respectively. The Ka value of lactic acid is 1.4x10^-4. Calculate the pH of this buffer.
By the mid 1840s, Marx is living in Paris among so many other radicals and exiles. What is the cumulative effect on him and his thinking of this environment
A solution is known to contain Bi3+ ion or Cd2+ ion or both. Describe the test(s) that could be used to separate and identify these ions. Describe the results you would expect to see for each ion, i
How did the ideas famed Communist Manifesto came to be written? Is it anything like what later generations have thought it to be?
During a moment of intense spiritual need, three religious movements of explosive protest and reform emerged in the early 16th Huldrych Zwingli extended the Reformation to Switzerland, and later John
Three 5.00mL samples of this solution are titrated with DCP that had a standardized concentration of 9.94x10-4M. The three titrations took an average of 27.51mL of DCP. (MM Ascorbic Acid = 176.124 g
A volume of 75mL of H2O is initially at room temperature (22C). A chilled steel rod at 2.00 C is placed in the water. If the final temperature of the system is 21.0 Celsius, what is the mass of the
Compare the differences between Romanesque and Ottoman artecture, espectially the cathedral between 13-14th century.
The concentration of K+ in blood plasma is about 0.0050 M. The high internal concentration in cells is maintained by pumping K+ from the plasma. How much work must be done to transport 1.0 mol K+ fr
What's the difference between England church and French church between 1000-1400
Consider the following cell: Pt|H2(g, 0.645 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.20 V at 25 °C and the standard reduction potential of the Ag /Ag half-reac
Nationalism acted as both a constructive and destructive force after 1789. Define it, and explain how it impacted European society between 1815 and 1940. Use specific examples to back up you
A careless student, Will Bobble, misread the label on a bottle of 10 M sodium hydroxide and used it (rather than 1 M NaOH) to dissolve his vanillin. Then he stored the solution and left the lab earl
Calculate the pH of this buffer if it is .10 M HC2H3O2 and .10 M C2H3O2-. The Ka for CH3COOH is 1.8x10^-5.
In the immediate aftermath of World War I, President Woodrow Wilson demanded ‘a revolution in international relations.” What were Wilson’s main goals and in what ways do they refl
A buffer is made by dissolving HC2H3O2 and NaC2H3O2 in water. Write an equation that shows how this buffer neutralizes added: Acid, Base
War between Germany and the U.S. almost started in 1915, however it took an additional two years for the American government to enter the war. Please elaborate on the events and decisions that charact
Overview of what makes a successful empire. What we can borrow from the Egyptians. What we can borrow from the Persians. What we can borrow from the Romans
A 22.0 mL sample of vinegar, which is an aqueous solution of acetic acid, HC2H3O2 , requires 24.5 mL of 0.450 M NaOH to reach the endpoint in a titration. What is the molarity of the acetic acid sol
What allowed Europeans to increasingly influence, dominate and colonize the world after the fifteenth century?
A buffer solution contains 0.219 M CH3NH3Cl and 0.428 M CH3NH2 (methylamine). Determine the pH change when 0.097 mol HI is added to 1.00 L of the buffer.
Compare the Battle of Waterloo in 1815 and The Somme in 1916, how warfare changed over this century, and what those changes reflect about the larger societies of Western Europe, particularly Britain a
A lactic acid/lactate ion buffer solution contains 0.31 M HC3H5O3 and 0.90 M C3H5O3- , respectively. The Ka value of lactic acid is 1.4x10^-4 . Calculate the PH of this buffer.
How did the experiences of China, the Ottoman Empire, and Japan–which retained their independence despite European pressure and meddling–differ from that of Africa and India–which fe
Consider the halide ions as nucleophiles. Briefly explain why F-, the strongest base among the halide ions, is the best nucleophile in polar aprotic solvents while iodide the weakest base is the bes