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What is the strongest base that may exist in water? What happens to stronger bases? (Use methoxide, CH3O1-, as an example.)
A 76 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is measured to be 3.12 × 105 N · m2/C. What
What is the new pH of the solution after 6.50g solid sodium hydroxide is added to 1.00L of the solution and dissolved. (Assume there is no appreciable volume change with the addition of the solid.)
The heat of vaporization of water is 40.66 kJ/mol. Assuming sweat is 100% water, how much heat is removed from your body through the evaporation of 1.86 g of sweat?
How does the average mass for a sphere in this sample compare with the average mass of the sample that consisted just of the blue spheres? How can such different samples have their averages turn out
What is the potential difference between the starting point and the top point of the trajectory?
Phenol is a common organic compound that may be used as a disinfectant. Its pKa in water is 10.0 while in methanol its pKa = 14.4. Is it a stronger acid in water or methanol? Explain the difference
A point charge of 7.0 x 10-9 C is located at the origin. How much work is required to bring a positive charge of 3.0 x 10-9 C from infinity to the location x = 30.0 cm
You take a 25.00 g ice cube (temperature -20 EC) and place it in 225.00 g of water at 22 EC. What will the temperature of the water be when the ice cube has just melted. Assume the specific heat cap
The helicopter and the sensor both move only in the horizontal direction and have a horizontal acceleration of magnitude 2.88 m/s2. Ignoring air resistance, find the tension in the cable towing the
Consider the combustion of ethylene, C2H4 (g) + 3 O2 (g) ------> 2 CO2 (g) + 2 H2O (g). If the concentration of C2H4 is decreasing at the rate of 0.025 M/s, what are the rates of change in the co
How many grams of nitrogen monoxide are produced when copper metal reacts with nitric acid to form water and 5.92 g of copper(II) nitrate in addition to the nitrogen monoxide?
What is the theoretical yield of hydrogen gas when 12.5g of sodium metal reacts with an excess of water, while also producing sodium hydroxide? (need balanced equation). What is the limiting reactan
What is the molarity of a sodium carbonate solution if it requires 35.2 mL of this solution to completely react with 17.4 mL of 0.985M copper(II) nitrate solution? (balanced equation)
How much heat would be given off per mole of NaOH if 4.6g of NaOH dissolves to give off 755J of heat? How many grams of NaOH are needed to produce 88 kJ of heat?
What is the magnitude of the electric field between the plates and What is the magnitude of the force on an electron between the plates and also How much work must be done on the electron to move it
The potential difference between the accelerating plates of a TV set is about 25 kV. If the distance between the plates is 1.8 cm, find the magnitude of the uniform electric field in the region betw
A 0.204 g sample of a CO3^2- antacid is dissolved with 25.0 mL of a 0.0981 M HCl. The hydrochloric acid that is not neutralized by the antacid is titrated to a bromophenol blue endpoint with 5.83mL
A potential difference of 84 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a posi
The car is moving with a constant velocity. At a time t = 23 s, the car just reaches the front of the train. Ultimately, however, the train pulls ahead of the car, and at time t = 46 s, the car is a
The electron affinity of nitrogen is a +7 while those for carbon and oxygen are !122 and !141 kJ/mole, respectively. Why is it even reasonable to suggest nitrogen having a positive electron affinity
You are on the Starship Enterprise and the person in charged of preparing the weapons that are being used in a battle with the Klingons.
Along the paths of the ballon and pellet there are two places where each of them has the same altitude at the same time. How far above ground level are these two places?
A basketball is thrown horizontally with an initial speed of 4.90 . A straight line drawn from the release point to the landing point makes an angle of 30.0 with the horizontal. What was the release
Ball A is dropped from the top of a building of height h at the same instant that ball B is thrown vertically upward from the ground. When the balls collide, they are moving in opposite directions,