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A flask contains 200 mL of 0.1M phosphate buffer that has a pH of 7.0. What volume of 0.1M NaOH should be added to increase the pH to 7.6?
what is the of a buffer system that contains 0.210 hydrocyanic acid and 0.240 sodium cyanide ? the of hydrocyanic acid
a gas is enclosed in a cylinder fitted with a piston. the volume of the gas is 2.00 l at 1.00 atm pressure. the piston
What is the longest wavelength of radiation with enough energy to break carbon-carbon bonds
the critical temperature of the mixture is known to be 200 F. Compare your answer with the critical pressures of pure methane and pure n-hexane.
Calculate the standard emf of a cell that uses Mg/Mg2+ and Cu/Cu2+ half-cell reactions at 25°C.
Write the balanced chemical equation for the neutralization reaction that occurs when an aqueous solution of hydrochloric acid (HCl) is mixed with an aqueous solution of potassium hydroxide (KOH).
At this temperature, calculate the number of moles of NO2(g) that must be added to 2.88 mol of SO2(g) in order to form 1.20 mol of SO3(g) at equilibrium.
When a 2.50 L flask containing 1.00 atm of gas A is joined with a 0.500 L flask containing 0.750 atm of gas B, and the stopcock between the flasks is opened, and the gases are allowed to mix thoroughly
A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92% (w/v) NaCl in water. How many grams of NaCl are contained in 729 mL of this solution.
How mush heat energy is reuired to melt one ice cube in a soft drink to form liquid water at 0 degrees C, if the ice cube has a mass of 18.9 g?
Two students were carrying out an Sn2 reaction between 1-chloro-3-methylbutane with sodium methoxide, which is relatively slow. When they added sodium iodide, the reaction was accelerated considerably. How is this catalysis best explained
what is the pressure of H2 gas collected over water when the total pressure is .980 atm at 25 degrees celsius.
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