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Two liquids- one polar, one nonpolar- have the same molar mass. Which one has the higher boiling point? Please choose the best answer and explaination. a. it is impossible to say without additional information b. the nonpolar liquid will have the higher boiling point, since its molecules are more loosely held together. c. the nonpolar liquid will have the higher boiling point, since the polar molecules will repel each other and lower the boiling point. d. the polar liquid will have the higher boiling point, since its molecules have dipole-dipole interactions. e. they will have similar boiling points, since the dispersion forces depend upon molar mass
For a protein w/ a molar mass of 1x10 6 u, calculate the molar concentration required to obtain an osmotic pressure of 10 matm at 25 degrees C.
The volumes listed correspond to the ½ equivalence point, equivalence point, 1 ½ equivalence point, and 2 equivalence point. The pH will equal pKa2 at the 1 ½ equivalence point, which is 11.55. Therefore, the [H+] = 10^(-11.55) = 2.81 x 10-12
What is the concentration of a solution (in M) which contains 59.3 g of sucrose (C12H22O11) in 673 mL of solution
In a calibration of a calorimeter, 50.0 g of water at 60.0 degrees C is added to 50.0 g of water at 20.0 degrees C to give a mixture 39 degrees C. What is the heat capacity of the calorimeter used in this experiment
When HSCN is added, you expect that the equilibrium will shift to the right and the reaction mixture will become darker (more orange).
A carbon-hydrogen compound is burned in an excess of oxygen to give 1.76g of carbon dioxide and 0.900g of water as the products of combustion. What is the empirical formula of the organic compound
The density of liquid oxygen at its boiling point is 1.14 {kg/L} , and its heat of vaporization is 213 {kJ/kg} . How much energy in joules would be absorbed by 2.0 L of liquid oxygen as it vaporized? Express your answer numerically in joules.
A solution of water and a nonvolatile, nonionizing compound is placed in a tube with a semipermeable membrane on one side. the tube is placed in a beaker of pure water. What initial net effect will occur?
In the preparation of the esters given in this experiment, the reaction product was extracted with 5% sodium bicarbonate solution in the isolation step. Why? What gas was evolved during this washing step? Write a balanced equation for the reaction..
Biphenyl is an organic compound that melts at 68.50?C and has a Kfp = 8.00?C/m. If 30.0 mg of lysine and 1.200g of biphenyl has an observed freezing point of 66.13?C, what is the molecular mass of lysine
Complete combustion of 4.80 g of a hydrocarbon produced 14.7 g of CO2 and 7.02 g of H2O. What is the empirical formula for the hydrocarbon?
write the balanced equation for the combustion of isooctane (C8H18) to produce carbon dioxide and water. Use the smallest possible integers to balance the equation.
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