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A glass electrode with an internal pH of 7.00 is dipped into asolution whose pH is 11.40. If the factor β is 0.98, how much voltage is generated by the pH gradient?
A zero-order reaction has a constant rate of 4.60×10?4 M/\rm s. If after 70.0 seconds the concentration has dropped to 6.50×10?2 M, what was the initial concentration
a 1.95 g sample of ascorbic acid is titrated with a 0.89 M red dye. What volume of red dye is required to reach the endpoint
What is the PH of .0750L of hypochlorous acid/hypochlorite buffer solution, originally .300M in HCLO and .400M in CLO-. after 7.5E-3 moles of NAOH have been added to the buffer
write a 700- to 1050-word paper based on the week one readings on the field of gerontology in which you describe the
calculate acidic and basic buffer capacity. How much of strong acid should be added to shift buffer pH one unit down, and how much of the strong base is needed to bring buffer pH one unit up?
For combustion of hydrogen gas the standard enthalpy of reaction is -286 kJ/mol and the standard Gibbs free energy of reaction is -237 kJ/mol at 298 K and 1 bar.
What is the heat capacity of an empty glass mug weighing 300.0 g, and what quantity of heat is required to heat it from 25 oC to 75 oC?
Starting from the left side of the periodic table, the melting and boiling points of the elements first increase, and then decrease
Write a charge balance equation and mass balance equation for the following solutions a. 0.10 M NaCl
for a respiration rate of 18 breaths per minute, how many moles of oxygen per minute are absorbed by the body. assume the mole fraction of oxygen in air is 0.21. compare this result with example problem 1.1.
Use the Henderson-Hasselbach equation to calculate the pH of an acetate buffer in which the acetate concentration [CH3COO-] is three times greater than the acetic acid [CH3COOH] with a pKa of 4.76.
What difference in titrant volume would you except between the end- point and the equivalence point if the only indicator available was diphenylamine sulfuric acid
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