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Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0240 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca2 (aq) can be separated from the Ag (aq) by selective precipitation?
the following changes in a DNA molecule may have no effect on the protein for which the DNA codes
what is the equilibrium expression for the reversible reaction of: 2CrO42-(aq) + H2O(l) Cr2O72-(aq) + 2OH-(aq)
At 1000 deg. K, a sample of pure NO2 gas decomposes. 2NO2(g)f/r2NO(g) + O2(g) The equilibrium constant Kp is 158. analysis shows that the partial pressure of O2 is 0.14 atm at equilibrium.
Draw the molecular orbital diagram for the acetylide anion (C22-). Assume that order of the n=2 molecular orbitals in increasing energy is
Ammonia is used for refrigeration. the heat of vaporization of ammonia is 23.35kJ/,mol. How many grams of ammonia would have tovaporize toofreeze one tray of ice cubes
You have 4.507 L of a 0.1572 M H3BO3 (boric acid, Ka = 5.800x10-10) solution. To convert this into a buffer having a pH of 9.3380, how many grams of KH2BO3 (M.W. 99.926) should be added to the solution?
Consider the following reaction- 2 A(g) + B(g) 3 C(g) + D(g) please determine Kc if 6.0 moles of A is added to 6.0 moles of B in a 2.0 L yields 0.10 moles of D at equilibrium.
The density of titanium metal is 4.51 g/cm}^3 at 25 C}. What mass of titanium displaces 69.6 mL of water at 25 ^C?
It has a diameter of 13.46 cm. On the other hand, spent uranium (from processing which removes the commercially important rare isotope) has a specific gravity of 19.05. How many pounds would a uranium cannonball of the same dimensions as the iron ..
Calculate (a). the kilograms of water per minute needed to remove the sulfur dioxide assuming that the exit water is in equilibrium with the entering gas and (b) the ratio of the water stream to the gas stream. The Henry's law constant for sulfur ..
If the equilibrium concentration of Fe3+, SCN-, and FeSCN2+ are 0.00140 M, 0.00140 M, and 0.000414 M, respectively, calculate the equilibrium constant for Fe3+ + SCN- FeSCN2+.
A sample of nitrogen gas at 298 K and 0.980 atm has a volume of 37.42 L. What volume will it occupy if the pressure is increased to 1.176 atm at constant temperature
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