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A student dissolve 1.00 gram of product in 50ml H2O. the di stribution coeffcient of the compound in ether and H2O is five. how much of the student's compound will be extract by one 60ml portion of ethe r? How much will be extract if the student use three 20ml portion instead?
The Vapor pressure of pure water at 25 Celcius is 23.8 torr. What is the vapor pressure (torr) of water above a solution prepared by disolving 18.0 g of glucose (a nonelectrolyte, MW = 180.og/mol) in 95.0g of water
Name each of the following species for the following acid-base reactions. (The equilibrium lies to the right in each case, i.e., the product side is favored. If the species is an ion, include the word "ion" in the name.
If molar magnetic susceptibility (Xm) is measured in m^3/mol, what must be the units on B(calibration constant)? what are the units on the 3.7278 in the formula for the magnetic susceptibility of Mohr's salt? what are the units on the 8.07 in the ..
What is the empirical formula of this compound. If, for example, the compound was C2Cl3F, then one would input `C2Cl3F' - no spaces, no commas, proper case for the letters in the atomic symbols, and alphabetical order of the elements is required h..
The concentration of a phosphoric acid solution is determined by titration against a 0.00215 g sample of pure NaOH using phenolphthalein indicator. What is the concentartion of the phosphoric acid solution
What volume of 0.250 M KCl(aq) will completely react with 50.0 mL of 0.115 M Pb(NO3)2(aq)? 2 KCl(aq) + Pb(NO3)2(aq) ® PbSO4(s) + 2 KNO3(aq)
a 25.00 ml sample of 0.100 m ch3co2h is titrated with 0.100 m naoh. what is the ph of the solution at the points where
At 21, the rate constant is0.0110 s^-1 . At what temperature in degrees Celsius would this reaction go twice as fast?
Helium gas, at constant pressure of 1.6 atm, expands in volume from 25.7 L to 86.3 L. The temperature is held at 357 K. Calculate the work done by the gas(in joules).
Oxygen gas is commonly sold in 45.5 L steel containers at a pressure of 131 atm . What volume (in liters) would the gas occupy at a pressure of 1.06 atm if its temperature remained unchanged
A solution with a weak acid was tested with the indicators in this experiment. The colors observed were as follows: - methyl violet: violet
Which of the following elements would you expect to gain electrons in chemical changes
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