Discuss what is the percent ionization
A 16 ounce speciality coffee drink contains 254 mg caffeine. If all the caffeine is extracted and dissolved in an equal amount of water, what is the pH of the solution? What is the percent ionization?
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The ionization constant for benzoic acid is 6.5 X 10^-5. Find the hydrogen ion concentration at equilibrium when the initial concentration of the benzoic acid is 0.00024 M.
A fluid film of 0.2 mm thick separates the cube and the plane surface with a contact area of 0.2m^2 . If the fluid viscosity is 0.04 N.s/m^2 , the terminal speed of the sliding cube is?
The clam is that the white blood cell counts of adult females are normally distributed, with a standard deviation equal to 1.87. A random sample of 38 adult females has white blood cell counts with a mean of 8.84 and a standard deviation of 2.84.
The tension in the rope is 140 N and the crate's coefficient of kinetic friction on the incline is 0.220. a) What is the work done by friction? b) What is the work done by the normal force?
When placed in an aqueous solution, the block of material floats with 1 in. below the surface. Estimate the specific gravities of the block and the solution.
The smell of ripe raspberries is due to4-(p-hydroxyphenyl)-2-butanone, which has the empirical formulaC5H6O. To find its molecular formula, you dissolve 0.135g in 25.0gof cholorform, CHCl3.
A ring of charge with radius R = 3.5 m is centered on the origin in the x-y plane. A positive point charge is located at the following coordinates:
A +2.0-nC point charge is placed at one corner of a square (1.5 m on a side), and a -3.0-nC charge is placed on a corner diagonally away from the first charge. What is the magnitude of the electric field at either of the two unoccupied corners?
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