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A monoprotic acid with a Ka= 6.46E-5 has a partition coefficient of 5.6 (favoring octanol) when distributed between water and octanol. Find the formal concentration of the acid in each phase when 100mL of 0.10M aqueous acid is extracted with 39mL of octanol at (a) pH 4.00 (b) pH 8.00. (a) pH= 4.00 what is the M concentration in water? What is the M concentration in octanol? (b) pH= 8.00 what is the M concentration in water? what is the M concentration in octanol?
Calculate the total mass of acetic acid dissolved in the solution contained in the volumetric flask (f) The mass(g) of acetic acid dissolved in the solution contained in the volumetric flask came drom the 25.00 ml vinegar sample.
The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. Calculate the energy in J of the electron when it is in the n= 4.00 level.
When 28 mL of a 430 mL stock solution containing 2.3 M AlCl3 is diluted to 114 mL, how many moles of Al3+ are in the new solution?
what the oxidation state P in PO4^-2? what the oxidation state O in PO4^-2?
Determine the empirical formula of a compound containing 77.3% silver, 7.4% phosphorus and 15.3% oxygen.
It is important to know if a particular molecule is composed of elements with different electronegativities as well as the structure of the particular molecule to explain the physical properties of the molecule.
Compute the molar mass of vitamin C if a solution of 22.7 g in 100. g of water freezes at -2.40 oC. The Kf of water is 1.858 oC kg/mol.
Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.
What is the composition in mole fractions of a solution that has a vapor pressure of 39 at 20 ? Express your answer using two significant figures.
What would be the pressure of the gas, in kPa, if it were transferred to a container at 24 degrees Celcius whose volume is 55.0 L.
A piston has an external pressure of 11.0 bar . How much work has been done if the cylinder goes from a volume of 0.150 liters to 0.570 liters.
Calculate the reaction Zn(s) + 2HCl(aq) ! ZnCl2(aq) + H2(g) What mass of ZnCl2 (MW = 136.3 g/mol) can be prepared from the reaction of 3.27 grams of zinc (MW = 65.38 g/mol) with 3.00 grams HCl (MW = 36.46)?
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