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Consider a solution that is 0.022 M in Ba^{2+} and 0.020 M in Ca^{2+}. If sodium sulfate is used to selectively precipitate one of teh cations while leaving the other in solution, which cation will precipitate first? What minimum concentartion of Na_{2}SO_{4} will trigger the precipitation oftthe cation that precipitates first? Barium sulfate Ksp = 1.07 x 10^{-10} and calcium sulfate Ksp = 7.1 x 10^{-5}
what pressure would be required for helium at 25C to have the same density as carbon dioxide at 25C and 1.00 atm?
What scientific principle or law is used in the process of balancing chemical equations. Define the terms limiting reactant and excess reactant.
A gas bottle contains .650 mol of gas at .961 atm pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle.
19.8 mL NaOH is required to titrate 0.6013g of potassium hydrogen phthalate. How many mL NaOH required to titrate 25 mL 0.10 M HCL solutions
Take element Z = 57 from the periodic table. Ionize it 56 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
5 ml of 0.05 M CuSO4 solution was mixed with 5 ml of 3 M NH3 solution.Calculate [Cu2+] in equilibrium with Cu(NH3)4^2+. Experimentally the cell potential was found to be 0.387
Calculate the radius of an iridium atom, given that Ir has an FCC crystal structure, a density of 22.4 g/cm3, and an atomic weight
A mixture of neon and oxygen gases at a total pressure 975 mm Hg contains neon at a partial pressure of 325 mm Hg. If the gas mixture contains 3.75 grams of neon,
When burned in oxygen, 10.0 g of phosphorus generated enough heat to raise the temperature of 2950 g of water from 18.0oC to 38.0oC. The heat of formation of P4O10 from P4(s) and O2(g) is:
A reagent bottle is labeled 0.388M Na2SO4. assuming no volume change, how many grams of Na2SO4 (MM=142.05g/mol) needs to be added to 1.50L solution to obtain 0.750M solution of Na2SO4?
Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 rm J/(g cdot {^circ C}) and 1.00 rm g/mL] and that no heat is lost to the calorimeter itself, nor to the surroundings.
Calculate the volume occupied by 1.00 mol N2 using the van der Waals equation in the form of a virial expansion at its Boyle temperature. Assume that the pressure is 10 atm throughout.
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