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The solublity of acetanilide in hot water is 5.5 g/100mL at 100 degee centigrade and its solublity in cold water is .53g/100mL at 0 degree centigrade. what would be the maximum theoretical percent recovery from the crystalliztion of 2.5 g of acetanilide from 50 mL of water?
ammonia nh3 can be synthesized by the following reaction2 no g 5 h2g -gt 2 nh3g 2 h2ogstarting with 86.3 g no and
The plasma (HCO3-) of an individual living at a high elevation is 18.5 meq/L. If this concentration of bicarbonate fully compensates the decrease
when 28.6 kg of fe2o3 react with 17.2 kg of co and 6.3 kg of fe are recovered what is the percent yield for the
Use the appropriate relationships from the chapter of electrons in Atoms to determine the wavelength of the line in the emission spectrum of He+ produced by an electron transition from n=5 to n=2
It required 22.7mL of HCl to reach the orange-red end point. Calculate the molar solubility and Ksp of calcium hydroxide.
An aqueous antifreeze solution is 40.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.05 g/cm3. Calculate the molality, molarity, and mole fraction of the ethylene glycol.
In aqueous solution, which of the following would be an acid according to the definitions of the Arrhenius, the Brønsted-Lowry, and the Lewis theories?
The gas above the top liquid is at an absolute pressure of Pg. Furthermore, the densities and heights of liquid 1 and liquid 2 are P1 and P2 , and L1 and L2 , respectively. In terms of these given symbols, waht is the absolute pressure at the bott..
A solution is prepared by dissolving 0.11 mol of acetic acid and 0.11 mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.
An acid with a Ka of 1 x 10-8 is titrated with NaOH, both solutions being 0.020 M. What should the Ka of the indicator be, in order to obtain the best end point
Copper has two naturally occuring isotopes 63Cu (isotopic mass 62.9396 amu) and 65Cu (isotopic mass 64.9278 amu). If copper has an atomic mass of 63.546 amu, what is the percent abundance of each isotope
Pressure and temperature remain constant. What is the new voume if 0.500 mole O2 gas is added?
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