Calculate the value of the partition coefficient
At 20°C only 0.24 g of an organic acid "A" dissolves in 100. mL of water, but 2.70 g of the same acid dissolves in 100. mL of ether. Calculate the value of the partition coefficient.
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Sodium carbonate (Na2CO3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 2.01×10^3kg of sulfuric acid solution
Why does surface complex formation with a weak acid lead to a relative maximum in the extent of surface complex formation (adsorption) at a pH which is usually near the value of -log acidity constant of the weak acid (pKHA)
A sample of magnesium wieghs 26.1 mg. How many moles of magnesium are there in the sample? Calculate the mass of one mole of the ionic compound that forms from strontium an dbromine.
A third sample, of mass 5.66 g was burned under different conditions to yield 2.49 g of HNO 3 as the only nitrogen containing product. Calculate the empirical formula of the compound.
what is the wavelength (in nanometers ) of the spectral line that correspond the n=6 level to the n=1 level in the hydrogen atom
Now consider a sample that consists of four spheres, each with a different mass: blue mass is 4.00 g, red mass is 3.75 g, green mass is 3.00 g, and yellow mass is 1.25 g. Calculate the average mass of a sphere in this sample.
What is the pH of the original buffer after the addition of 0.10 mol of hydroiodic acid ?
A water has a pH = 7.4 and an alkalinity of 400 mg/l as CaCO3. The first dissociation constant for carbonic acid (H2CO3) is K1 = 4.45e-7. Assume all activity coefficients are equal to 1.0. What is the concentration of carbonic acid in moles/liter?
Explain how to prepare 500.0 mL of an 8.00% v/v methyl alcohol solution. * measure out 40.0 mL of methyl alcohol * measure out 4.0 mL of methyl alcohol
Calculate the maximum number of moles and mass of iodic acid (HIO3) that can form when658 g iodine trichloride reacts with111.2 g water. What mass of the excess reactant remains?
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