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Pentane (C5H12) and hexane (C6H14) form an ideal solution. The vapor pressures of pentane and hexane at 25° C are 511 torr and 149 torr, respectively. The mole fraction of hexane in a pentane-hexane solution is 0.750. a. Calculate the partial pressures of pentane and hexane in the vapor. b. Calculate the mole fraction of pentane in the vapor in equilibrium at 25° C with this solution.
Which of the following molecules is polar?
calculate the number of moles of KOH in 5.50 mL of a 0.360 M KOH solution.What is the pOH of the solution?
A room contains 12,000 ft.³ of air at 75°F and 29.7 inches Hg Absolute. The air has a dew point of 60°F. How many pounds of water vapor are in the air
The sulfur and hydrogen in the fuel are completed oxidized to SO2 and H2O. 8% of the carbon is oxidized to CO, and the balance forms CO2. Calculate the dry basis mole fractions of the flue gas
The percent transmittance, %T, reading on a Spectronic 20 for a certain solution is found to be 45%. Calculate the absorbance for the solution
If the solubility of phthalic acid in nearly boiling water is 180 g/L, how much water is required to recrystallize 2.0 g of phthalic acid?
A solution of glycerol in 701 g of water has a boiling point of 103.8 C at a pressure of 760 mm Hg. What is the mass of the glycerol in the solution?
redraw it as a zwiterrion a neutral molecule with a positive and a negative electrical charge (n.b. not dipoles) at different locations within that molecule.
Commercial grade hcl are typically 39% by mass HCL in water. determine mole fraction of HCL has solution has density
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 ..
Calculate the pH of the solution made by adding 0.50 mol of HObr in 0.30 mol of KOBr to 1.00 L of water. The value of Ka for HObr is 2.0 * 10^-9
What mass of AlCl3 can be formed from 5.000 mol NiCl2 and 2.000 mol Al?
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