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A chemist titrates 200.0mL of a 0.5495M pyridine C5H5N solution with 0.0872M HBr solution at 25°C . Calculate the pH at equivalence. The pKb of pyridine is 8.77. Round your answer to 2 decimals places.you may assume the total volume of the solution equals the initial volume plus the volume of HBr solution added.
how long was the flight? How far did it travel in the horizontal direction before landing? What was the highest altitude it reached? Neglecting air friction at what angle should the projectile have been fired to maximize the horizontal range.
which of the following species would be expected to have chemical properties most similar to those of the nitrogen
The human eye is able to detect as little as 2.35 × 10-18 J of green light of wavelength 510 nm. Calculate the minimum number of photons of green light that can be detected by the human eye. Physical constants can be found here.
The meat from one hazelnut has a mass of 0.985 g. a. What is the mass of a millionth of a mole (10^-6) of hazelnut meats. b. How many moles are in a pound of hazelnut meats
Calculate how many grams of Copper II carbonate are obtained when 5.2ml of an 3.0M aques solution of sodium carbonate is mixed with 10.0ml of a 5.0M aques solution of Copper II Nitrate.
For this picnic, you need to feed at least 500 people. If you want to feed everyone, but still have equal numbers of buns and hot dogs, what is the minimum number of packages of buns and hot dogs you need, respectively?
When octane is burned in air, it chemically reacts with oxygen gas to produce carbon dioxide and water . What mass of octane is consumed by the reaction of of oxygen gas?
Explain why ionic components are formed when a metal from the left side of the periodic table reacts with a non-metal from the right side. give two examples of each
Traumatic acid has a distribution coefficient of 5.8 between MtBE and water. If 75 mg of traumatic acid is added to a centrifuge tube containing 3mL of water and 2mL of MtBE, how much traumatic acid would be in each layer after thorough mixing
when separated from a water solution CuSO4 forms a hydrate with 5 wlater molecules per formula unit. if 47 g of anhydrous CuSO4 are dissolved in water, what mass of the hydrate could be recovered from the solution.
Calculate the energy released when a 28.9 gram piece of copper is cooled from its melting point of 1083 degrees C to 25.0 degrees C. The specific heat of copper is .385 J/g degrees C.
If the surface area of a human body is 16,100 square centimeters, what is the total weight of the atmosphere on a human body
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