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An aqueous solution of KI has a freezing point of -1.70 C and an osmotic pressure of 26.5 atm at 25.0 C. What is the density ?
The excess of acid needed 16ml of 0.25M Naoh for neutralization. then Calculate the percentage of calcium carbonate and magnesium carbonate?
PCl5 + 4H2O > 5HCl +H3PO4. How many total moles of acid are formed when starting with 4.5 g of PCl5 and excess H2O.
Hydrogen ion concentration in mixtures, Calculate the hydrogen ion concentration of the following mixtures. a. 25mL of 0.10M HClO4 and 25mL of 0.15M HClO2
What types of stationary phases used for column chromatography and HPLC? How these staionary phase work and what types of compounds can be separated using this?
Find out the concentration of this solution 1) in m (molality), 2) XHX (mole fraction of HX), 3)% w/w (percent by mass) if solvent in this solution is H 2 O. ?
Calculate the equilibrium value of Pb+2(aq) in 1.00 L of saturated PbCl2 solution to which 0.250 moles of NaCl(s) has been added. Assume that no volume change occurs.
Number of Moles and Conversion, a) Number of moles of carbon atoms in 0.585 moles C4H10
How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)
The most common source of copper is the mineral chalcopyrite (CuFeS2) how many kilograms of chalcopyrite must be mined to obtain a 440 grams of pure copper.
Calculate the pH of a solution prepared by dissolving 0.30 g of BaO in enough water to make 0.800 L of solution.
Gas stoichiometry and Percentage of calcium carbonate in the sample
determine the value Keq at 400K for the decomposition of phosphorus trichloride of [PCl5]=0.135 mol/L, [PCl3]=0.550mol/L.. and [Cl2]=0.550mol/L the equation for the reaction.
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