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At a pH of 4, the Cu-neocuproine complex formed in the liquid-liquid extraction experiment has a partition coefficient of about 6.5 when equilibrated between the acid aqueous solution and chloroform. Calculate the concentration of Cu in the chloroform phase if 39 mL of a 0.28 M aqueous Cu solution buffered to pH 4 is equilibrated with 12 mL of chloroform.
The boiling point of the solvent and of the solution and the weight of the solute and solvent. The freezing point of the solvent and of the solution and the weight of the solute and solvent.
Calculate the work done (in Joules) when 1 mole of ideal gas at 2 bar pressure and 300 K is expanded isothermally to a pressure of 1.5 bar, with the external pressure held constant at 1.5 bar.
What is the electron geometry. 3. What is the molecular geometry. 4. What are the hybridized orbitals. 5. Is the molecule polar or non-polar
The spectroscopic data of diatomic iodine shows a vibrational frequency of 214.5 cm-1, rotational constant of 0.03737 cm-1, and D0 of 12,440 cm-1. If the enthalpy of reaction is 153.97 KJ, Does this value make sense based on the spectroscopic data..
Calculate the formal concentrartion of a sodium acetate solution prepared by diluting 45.0 mL of a solution containing 25.0 ppm sodium acetate
a sample of vanadium haveing 5.67 grams of mass upon heating combined with oxegen of 4.45gramsto make vanadium oxide.
The equilibrium pressure is measured as 0.8 atm. What is the molecular weight of the gas? 1. 138.5 g · mol?1 2. 12.5 g · mol?1 3. 3.6 g · mol?1 4. 45 g · mol?
How many hydrogens does an alkane with 17 carbons have How many carbons does an alkane with 74 hydrogens have Draw the structure and give the systematic name of a compound with molecular formula C5H12 that has
A graduated cylinder contains 148 of water. A 17.0 piece of iron (density = 7.86 ) and a 19.0 piece of lead are added. What is the new water level in the cylinder?
It takes 45.0 to raise the temperature of an 8.00 piece of unknown metal from 13.0 to 24.5. What is the specific heat for the metal.
Upon isolation of the product it appears to be optically inactive. Explain what must have happened mechanistically. If your goal is to synthesize (S)-2-iodobutane, how might you modify the experiment to ensure that you do so in your next attempt
During the discharge of an alkaline battery, 4.30 g of Zn are consumed at the anode of the battery. What mass of MnO_2 is reduced at the cathode during this discharge? (in g) also How many coulombs of electrical charge are transferred from Zn to M..
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