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Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 degrees Celsius. At what temp would benzene boil when the external pressure is 470 torr
find the concentration of calcium ions in a solution made by adding 3.50 g of calcium fluoride to 750ml of .125M NaF. Ksp for CaF2 is 3.95x10^-11
At 25ºC the solubility product constant, Ksp, for magnesium phosphate, Mg3(PO4)2, is 1.0´10-24. The solubility product constant for magnesium fluoride, MgF2, is 7.0´10-11.
Consider the following precipitation reaction 2 Na3(PO4)2(aq) + 3CuCl2(aq) ----> Cu3(PO4)2 (s) + 6 NaCl (aq). What volume of 0.168 M NaPO4 solution is necessary to completely react with 91.4 mL of 0.117 M Cucl2
if titration of 20.0 mL of 1.50 M H2SO4 solution requires 25.0 mL of NaOH to reach equivalence point, what is the molarity of the NaOH titrant
What is the dissociation constand, Kd, of a ligand with a percent occupancy
Why ammonium ion is NOT classified as a Bronsted-Lowry base? 2.Why sulfur hexafluoride DOES NOT obey the octet rule?
a, The height of Niagra Falls is 51 meters. Calculate the Potential Energy of 1g of water at the top of the falls relative to the ground level. b, What would be the increase in temperature of the water if all Kinetic Energy were converted to heat.
A 0.200 L sample of H2 is collected over water at a temperature of 298 K. Atmospheric pressure is 99.00 kPa. Water has a vapor pressure of 23.00 Torr at this temperature. What is the mass of the sample of gas which was collected
If 5.00 X 10^3kg each of ammonia, oxygen, and methane are reacted, what mass of HCN and water would be produced, assuming 100% yield?
What is the wavelength of light required to induce a transition from the ground state to the first excited state?
Rank the following organic molecules from lowest to highest boiling point. Use the letters A, B, C to identify each molecule in the list and use the appropriate symbol to separate substances in the list.
Calculate the molar mass of a nonelectrolyte that lowers the freezing point of 25.00 g of water to 3.9°C when 4.27 g of the substance is dissolved in the water.
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