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Soil sampling results indicated the area impacted with lead above action levels is 30 feet by 55 feet. The depth of the lead contamination plume is three feet below ground surface.
Using the Ka for formic acid, calculate the pH at the equivalence point D. for the titration described in the other question above.
An unknown solid acid is either triprotic acid or diprotic tartaric acid. To determine which you titrate a sample of solid with NaOH. A 0.956g sample requires 29.1 ml of 0.513mol L -1 NaOH solution for titration to the equivalence point. What is t..
How many kilojoules of heat are required to evaporate 1 liter of water at 1 atm if the initial water temperature is 20 degrees Celcius
What is the horsepower output of his arms under these conditions? Assume his arm muscles have an energy conversion efficiency of 25.0%
Compute the volume (in mL) of a 0.570 M KOH solution that must be added to 6.000 g of HEPES MW=238.306 g/mol, pKa = 7.56 to give a pH of 7.72.
the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0 Torr and the temperature is 25 degrees C. Calculate the atomic mass of the metal.
Choose the scientist: write X for Democritus, D for Dalton, T for Thomson, R for Rutherford or B for Bohr - element were identical to all other atoms of the same element this was not correct.
This wavelength is in the x-ray region of the electromagnetic spectrum. The purple dot is a representation of the x-rays hitting the video camera. Change the Electric Field and Magnetic Field to determine the effect on the x-rays. Did the electric..
The annual production of zinc sulfide (ZnS) is 3.5 104 tons. Estimate the number of tons of SO2 produced by roasting it to extract zinc metal.
Suppose the radius of an atom in a body-centered cubic unit cell is 0.35 nm. What is the edge length of the unit cell in nm.
Explain Buffer Solution and Henderson-Hasselbalch H-H, What is the pH of a solution prepared by mixing 50.00mL of 0.10 M NH3 with 25.00mL of 0.10 M NH4Cl? Assume that the volume of the solutions are additive and that Kb= 1.8 x 10 -5 for NH3.
Find delta s, q,w, and delta u for the reversible isothermal expansion of 3.000mol of argon (assumed ideal) from a volume of 100.0L to a volume of 500.0L at 298.15K
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