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Predict whether a precipitation reaction will occur when aqueous solutions of the following substances are mixed:
a) MnCl2 + Na2Sb) HNO3 + CuSO4c) Hg(NO3)2 + Na3PO4d) Ba(NO3)2 + KOH
What difference in their structural properties renders the triethylene glycol the only one that will work?
What is the pH of a solution which results from mixing 150 mL of 0.50M acetic acid and 150 mL of 0.50M sodium hydroxide at 25oC?
The specific rotation, [?]D, for (+)-tartaric acid is +12. What is the observed rotation for a solution of 0.75 g of (+)-tartaric acid in 10 mL of water in a sample tube having a pathlength of 10 cm?
The colors of the acid and base forms of the indicator bromocresol green are yellow and blue, respectively, and its pKa is 4.6. What color would be expected for the indicator in a solution of pH 6.0 and in a solution of pH 4.8?
Once the solvent front reaches the top of the chromatographic paper,solvent begins to evaporate from the top edge of the paper, and the remaining solvent continues to move up the paper.
if 18.4 ml of 0.800 mrm hcl solution are needed to neutralize 5.00 rm ml of a household ammonia solution what is the
Calculate the amount of energy released in the formation of one mole of BaSe bonds (not lattice energy).
You mix 1.0 mL of 0.50 M Cu(NO3)2 with 6.0 mL of 0.05 M KI, and collect the dry CuI precipitate. What mass of CuI do you expect to obtain from this reaction
If the rate constant at 20 degrees CELSIUS IS 4.3(10^-5). How long would it take for 83% of the compound to decompose ? if the rate constant is 9.0(10^-4) at 55 degrees Celsius what will the activation energy be?
Use the following information to find H °f of gaseous HCl: N2(g) + 3H2(g) ? 2NH3(g) ?H°rxn = - 91.8 kJ N2(g) + 4H2(g) + Cl2(g) ? 2NH4Cl(s) ?H°rxn = - 628.8 kJ NH3(g) + HCl(g) ? NH4Cl(s) ?H°rxn = - 176.2 kJ
What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2) and 85.0 g H2O? Kf of water is 1.86°C/m. A) 17.6°C B) -176°C C) -1.50°C D) 1.50°C E) -17.6°C
Free radicals are also important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the action of sunlight on air pollutants, is formed in part by the following two steps.
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