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Is the buffer capacity exceeded if .480g of solid HaOH isadded to this buffer? What is the pH of the Solution after addition of the NaOH?
What is the scale's measurement of her weight before the elevator starts descending. While it is still at rest on then top floor? Round your answer to 2 significant figures
Briefly describe how a buffer solution can control the pH of a solution when a strong acid is added. Use the pyrindine (C5H5N/C5H5NH+) buffer as an example. Include a reaction.
A baseball is thrown from the roof of a 22 m tall building with an initial velocity of 12 m/s. a. Determine the maximum height above the ground reached by the baseball if it is thrown at an angle of
A 15-kg block is suspended by a pair of cables that are each exactly 35.0 degrees from the vertical. Calculate the tension in each cable, rounding your answer to 2 significant figures.
Air is about 78.0% nitrogen moleculesand 21.0% oxygen molecules. Several other gases make up there maining 1% of air molecules. What is the partial pressure of oxygen in air at atmospheric pressure
On a force table, three threads pull on a central ring. Thread 1 pulls at 180 degrees, thread 2 pulls at 90 degrees, and thread 3 pulls at 300 degrees. Thread 3 pulls with a tension of exactly 0.500
What is the partial pressure of nitrogen in air at atmospheric pressure (1 atm)? Assume ideal behavior.Express your answer numerically in atmospheres.
A 590 cm3 block of aluminum (D = 2.7 g/cm3) is lowered carefully into a completely full beaker of water. What is the weight of the water, in newtons, that spills out of the beaker?
Why is it important to know amount of water in a petroleum product? (i.e. the free water and the dissolved and emulsified water) Why is important to know the amount of water and the amount of sedime
A tortoise can run with a speed of 0.14 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 5.0 minutes. The tortoise wins by a shel
The magnitude of the charge on each plate of a parallel plate capacitor is 80nC. The capacitor plates are square, 15 cm on a side and separated by 1.0cm. What is the magnitude of the electric field
What is the major product formed when 1-bromo-2-methyl cyclohexane under goes elimination reaction when treated with sodium methoxide?
For a speed of 45 m/s, at what value of the distance d should a driver locate his car if he wishes to stay on a circular path without depending on friction?
To reduce the solubility of benzoic acid in water to get it better portioned into diethyl ether, would it be better to add potassium carbonate or sodium chloride? Why?
A satellite has a mass of 5650 kg and is in a circular orbit 3.10 x 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.10 x 106 m. What is the tru
An electron starts from rest 76.5 cm from a fixed point charge with Q = -0.125 µC. How fast will the electron be moving when it is very far away?
What is Degradation? and what are some ways it is prevented? I did a cell fractioning experiment and I have to explain degradation and ways to prevent it?
A flask containing 5.oo mL of 3 M HCl solution requires 14.45 mL of1.00 M NaOH for titration. How many moles of HCL are present in the solution? The density of 3 M HCl is 1.05 g/mL.
How can you calculate an empirical formula if you are given the percent of each element present but not the molar mass?
An electron moving to the right at 9.0*10^5 m/s enters a uniform electric field also directed to the right. If the electron is to be brought to rest in the space of 6.5 cm, what is the strength of t
A 1480 kg car is traveling with a speed of 15.0 m/s what is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 43.5 m.
What compound would be formed if two molecules of salicylic acid under went esterification? Why is this not a major side reaction in the synthesis of methyl salicylate?
A roller coaster,traveling with an initial speed of 15 meters per second decelerates uniformly at -7.0 meters per second^2 to a full stop. Approximately how far does the roller coaster travel during
A 10.00 mL sample of H2SO4 is titrated with a 0.25M NaOH solution. Exactly 40.0 mL of NaOH is required to reach the end point. Calculate the molar concentration of the sulfuric acid. H2SO4