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The experimentally measured freezing point of a 1.25 m aqueous solution of AlCl3 is -7.44°C. The freezing point depression constant for water is Kf = 1.86°C/m. Assume the freezing point of pure water is 0.00°C.
A.) What is the value of the van't Hoff factor for this solution?
B.) What is the predicted freezing point if there were no ion clustering in the solution? In degrees Celsius
If 5.50 g of the unknown compound contained 0.183 mol of C and 0.367 mol of H, how many moles of oxygen, O, were in the sample?
What is the fraction of NTA present after HT2- has been brought to equilibrium with solid PbCO3 at pH 7.00, in a medium in which [HCO3-] = 1.00E-3 M?
The excess I2(aq) left over from the above reaction was titrated with 11.37 mL of 0.0105 M thiosulfate (S2O32-) as follows: I2(aq) + 2S2O32-(aq) → 2I1-(aq) + S4O62-(aq)
Which of the following chemical equations corresponds to the standard molar enthalpy of formation of N2O
Below is the 1H NMR spectrum of the following triazine structure. In the expansions of the spectrum, place the observed multiplicity in the bin above the resonance.
The proton NMR spectrum of compound D is given below. Treatment of compound D with ethyl magnesium bromide yields A. Draw the structures of compounds A, B, C, and D. 1H NMR of D: d 8.1-7.5, multiplet, 5H; 2.85, quartet, 2H; 1.30, triplet, 3H.
A piece of metal with a mass of 18.2 grams was dropped into a graduated cylinder containing 16.50mL of water. The graduated cylinder after the addition of the metal is 18.40. Determine the density of the metal.
The reaction described in Part A required 3.50L of calcium chloride. What is the concentration of this calcium chloride solution
Describe the biochemical mechanism by which RNA splicing occurs precisely at the exon-intron borders considering that a single nucleotide offset
As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively. A sparingly soluble salt, Herbigon is dissolved in 1 Macetic acid for technical reas..
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0370 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate
Hydrochloric acid reacts with aluminum to form aluminum chloride and gseous hydrogen. What's the mass of aluminum required to produce 1.0kg of aluminum chloride if there is excess acid?
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