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Predict if the following conditions would result in the formation of a preecipitate: a. 0.0025 M Fe3+ at pH 6.00 b. 0.0025 M Ba2+ and a 1.25x10-4 M solution of sodium sulfate c. 0.05 M Ca2+ and a 1.25 x 10-4 M solution of cesium phosphate d. 7.92 x 10-15 M solution of Hg2+ and a saturated solution of H2S at a pH of 0.5.
An ideal gas mixture contains 35% helium, 20% methane, and 45% nitrogen (by volume) at 2.00 atm absolute and 90 ?C. Calculate: (a) The partial pressure of each component.
Elemental analysis of the solid suggested the composition C9H10O3. The solid melted at 117 °C and gave the following nmr spectra and the ir spectrum. What is this material and why and how did it come to be in both of these sources?
If I add 1.65L to 112g of sodium acetate what is the molality of sodium acetate in the solution
a cube made of Platinum has an edge length of 1.60 cm the density of pt is 21.45 g/cm^3 calculate the number of pt atoms in the cube
Describe how you would make 500 mL of 0.150 M Na2SO4 given 1 kg of Na2SO4, a distilled water supply, a balance, anf a 500-mL volumetric flask.
How much heat (in ) is evolved in converting 1.00 of steam at 130.0 to ice at -50.0? The heat capacity of steam is 2.01 and of ice is 2.09
A lactic acid/lactate ion buffer solution contains 0.31 M HC3H5O3 and 0.90 M C3H5O3- , respectively. The Ka value of lactic acid is 1.4x10^-4 . Calculate the PH of this buffer.
The catalyzed reaction took 2 minutes. The non-catalyzed reaction took 30. Solutions in each consisted of 5 mL phosphate citrate buffer
What is the wavelength (in nm) of the line in the spectrum of the hydrogen atom that arises from the transition of the electron from the orbital with n =3 to the orbital
How many moles of Ammonia gas can be produced from reacting 4.5 Moles of Nitrogen gas
What are the molality and mole fraction of solute in a 36.3 percent by mass aqueous solution of formic acid (CH3OH)?
Calculate the average molecular weight of a gaseous mixture with the following composition on a mole % basis: CH4= 30%, H2= 10% and N2= 60%.
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