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Calculate the pH when 59.0 mL of 0.229 M hydrochloric acid is mixed with 59.0 mL of 0.229 M sodium hydroxide solution at 25 °C. Calculate the pH when 59.0 mL of 0.229 M of a certain monoprotic weak acid, HA, is mixed with 59.0 mL of 0.229 M sodium hydroxide solution at 25 °C. For HA, the Ka is 6.9× 10-5.
On the coldest day of last year, what was the temperature at the bottom of Lake Michigan? explain your answer in terms of the density of water.
A 4.80 g nugget of pure gold absorbed 288 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C.
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom
What is the theoretical amount of oxygen required for the fuel mixture. What amount of air is added to the fuel mixture. How many moles of methane are present in the product gas
is it possible to synthesize 1-bromo-4-nitrobenzene by reacting bromobenzene with a mixture of nitric and sulfuric acids. However, 1-bromo-4-nitrobenzene is not obtained if nitrobenzene is reacted with Br2/FeBr3. Explain the difference
How many moles of Na2SO3 were added to the calorimeter cup if 30.0mL 0.50 M NaOCl and 70.0mL 0.50 M Na2SO3 were combined?
What volume of 3.02 M HNO3 can be made by diluting 142 mL of concentrated nitric acid (16.0 M HNO3)?
How many grams of CO are needed to react with an excess of Fe2O3 to produce 558 g Fe? The equation for the reaction is: Fe2O3(s) + 2 CO(g) → 3 CO2(g) + 2 Fe(s)
The amount of nitrogen in an organic substance can be determined by an analytical method, called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammoinia.
Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: C5H5N + H2O C5H5NH+ + OH- The pKb of pyridine is 8.75. What is the pH of a 0..
Suppose 1.00 g of water (saturated liquid) evaporates isobarically at atmospheric pressure of 1.013x10^5 Pa. Its volume in the liquid state is 1.00 cm3 and its volume in the vapour state is 1671 cm3.
Calculate the pH of a solution that is 0.25M pyridine, C5H5N and 0.75M in pyridinium bromide, C5NHBr. (Kb for C5H5N= 1.7 * 10^-9)
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