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For Hickman still or for test tube microscale distillations, compare the refractive index data for simple and fractional distillations. Do the data suggest which distillation procedure is more efficient? Briefly explain.
if acetic acid has a pure vapor pressure of 20 torr at 30 degrees c and acetaldehye has a pure vapor pressure of 1000
How much energy (in kilojoules) is released when 22.5g of ethanol vapor at 97.0 Celsius is cooled to -10.0 Celsius? Ethanol has mp = -114.5 Celsius = 78.4 , = 38.56 and = 4.60 kJ/mol . The molar heat capacity is 113 J/(k.mol) for the liquid and 65..
Draw the Skeletal structure of (2R,3R)-dibromosuccinic acid ((2R,3R)-2,3-dibromobutanedioic acid) (show one wedge bond, one dashed bond, and two sticks attached to the chiral carbon.
Potassium hydrogen phthalate, has a molecular mass of 204.2 g/mole. How many moles of potassium hydrogen phthalate are in a 0.500 gram sample
If 500ml of a solution containing 1.00g of barium nitrate (199.33 g/mol) is combined with 500 ml of a soluiton containing 1.00g of sodium sulfate
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II), [Cu(NH3)4]^{2+}. If a standard hydrogen electrode is used as the cathode, the cell potential, Ecell, is found to be 0.085 V a..
In one experiment, the partial pressure increased from zero to 100 Pa in 522 s in a first-order reaction when the initial concentration of pyruvate ions in 100mL of solution was 3.23 mmol L^-1. What is the rate constant of the reaction
Write the anti-periplanar Newman Projection for the first step of the elimination. Using this conformation, be sure to write the correct geometry of the resulting intermediate
Question- A mixture of 1.374g of H2 and 70.31g of Br2 is heated in a 2.00L vessel at 700K. Calculate the equilibrium concentration of H2. Calculate the equilibrium concentration of Br2
The pressure of 3.0 L of an ideal gas in a flexible container is decreased to one-sixth of its original pressure, and its absolute temperature is decreased to one-ninth of the original. What is the final volume of the gas?
Explain what are the concentrations of acetic acid and acetate ion in 0.20M acetate buffer, pH 4.90? The pKa of acetate is 4.76.
Depict two Lewis structures for Cl2O7 one with a Cl--Cl bond and one with a Cl--O--Cl arrangement of atoms. Minimize formal charges on the atoms. Comprise formal charges in the drawings.
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