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Problem- When 41.5 L of nitric oxide reacts with 47.5 L of oxygen at 345 K under a constant pressure of 1.608 atm, what is the theoretical yield (in g) of nitrogen dioxide?
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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.
Without doing a calculation, which of the bonds below would you expect to have the higher stretching frequency. C-O or C=O
What is the width of a 1275 gram piece of aluminum with an area of 18.5 square meters and a density of 2.7 g/cc
Predict what a plot of temperature versus the volume of distillate will look like for the simple distillation and the fractional distillation of (a) a cyclohexane-toluene mixture and (b) an ethanol-water mixture.
calculate the standard free energy change for the following metabolically important enzyme-catalyzed reaction at 25degc
If the vapor pressure of the pure liquids at 20.0deg C are 227 torrand 31.7 torr respectively, what will be the total vapor pressure of the mixture? Also, what will be the mole fraction of each compound in the vapor?
Compute the work associated with the irreversible adiabatic expansion of the sample of gas described in part a) against a constant atmospheric pressure of 760Torr.
there are two natuarlly occuring isotopes of rubidum. (85)Rb has a mass of84.9118 amu. (87)Rb has a mass of 86.9092 amu. Determine the abundance of each isotpe.
Consider the titration of 40.0 mL of 0.050 M of the fully protonated form of tryptophan with 0.10 M KOH. Calculate the pH of the solution at the following points
If a 180mg piece of gold (density =19.32g/cm^3 ) is hammered into a sheet measuring 2.1ft x 1.0ft , what is the average thickness of the sheet in meters?
Assuming that no heat is lost to the cup or the surroundings, what will the final temperature of the water be? The specific heat capacity of iron = 0.449 J/g°C and water = 4.18 J/g°C.
A student is asked to prepare a buffer solution at pH = 8.60, using one of the following weak acids: HA (Ka = 2.7 X 10^-3) HB (Ka= 4.4X10^-6) and HC (Ka = 2.6 X 10^-9). Which acid should she choose? Why? (Hint: pKa = -logKa)
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