Determine the solubility of p-dibromo benzene in benzene
Determine the solubility of p-dibromo benzene in benzene at 20 and 40 degrees C assuming that ideal solutions are produced. The enthalpy f fusion of p-dibromo benzene is 13.22kJ/mol at its melting point (86.9 degree C).
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Suppose that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,200 per hour and a standard deviation of $270.
Let the set of vectors satisfying X1+3x2+2x3+x4 = 4. Determine extreme point of feasible region. Determine basic solution that is not feasible.
Determine how many liters of liquid nitrogen are produced when the 500.0 L of nitrogen gas are liquefied at this temperature? Liquid nitrogen is obtained by condensing gaseous nitrogen found in air and boils at 77.36 K.
Draw the general structure of a lipid and label the hydrophilic portion and circle the hydrophobic portion. The functional group found in all Lipids is esters.
If sodium iodide is added to the reaction mixture, the rate of methanol formation is dramatically increased (i.e. sodium iodide is a catalyst). Reaction of bromo methane with sodium hydroxide in water forms methanol.
Pure water is pumped into tank with rate of 2 gal/min, and when solution is well stirred, it is pumped out. Write the differential equation for amount of salt A(t) in tank at t > 0.
Calculate the ph for this reaction when half the amount of titration requires red to reach the equivalent point has been added.
For each of the following confidence intervals, indicate how much of the distribution would be placed in the cutoff region for a two tailed test.
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