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The potential use of "gasohol" as an automobile fuel has been in the news due to the elevation in the price of gasoline (octane). Typically, gasohol is a mixture of 90% octane H8C18 and 10% ethanol C2H4OH. Determine the energy output of 1 gram of gasohol using the following two pieces of information:
1. When 1 gram of octane is burned in oxygen it has a thermodynamic output of 47.7 kJ2. When 1 gram of ethanol is burned in oxygen it has a thermodynamic output of 29.6 kJ.
1. 42.7 kJ of energy for 1 gram of gasohol
2. 43.8 kJ of energy for 1 gram of gasohol
3. 45.9 kJ of energy for 1 gram of gasohol
4. 46.1 kJ of energy for 1 gram of gasohol
5. 46.7 kJ of energy for 1 gram of gasohol
A flask contains 0.250 of liquid bromine, . Determine the number of bromine molecules present in the flask.
Density of liquid methanol, Determine the density of liquid methanol in (lb/ft^3) and convert heat capacity, thermal conductivity and viscosity from SI units to English Units.
What type of rotation axis does the structure have parallel to the [0 0 1] direction and show the location of this axis in a [0 0 1] projection of this crystal structure?
if the height of the mercury column in a leveling bulb is 30 mm greater than that in the gas buret and atmospheric pressure is 670 mm, what is the pressure on the gas trapped in the buret.
A sample of an unknown peptide undergoes a single round of Edman degradation, which liberates ATZ-Gly. Another sample of the peptide is treated with trypsin, and a third sample is treated with chymotrypsin. The table below shows the fragments.
an automobile gasoline tank holds 21 kg of gasoline. When gasoline burs, 81 kg of oxygen is consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is produced?
Explain which you would choose as a starting material to prepare an alkene with the maximum yield.
what mass of aspirin can be prepared by reacting 5.00 g if salicylic acid with an excess of acetic anhydride?
The iron content of hemoglobin can be determined by converting the iron to Fe2+ and titrating using MnO4 -. A 5.0 g sample of hemoglobin requires 21.6 mL of 0.00310 M potassium permanganate. What is the percent of iron in the hemoglobin sample?
What is the chemical balance equation and what causes the color and precipitation?
The ionic structure of NH4Cl follows the radius-ratio rule. The ionic radii of NH4+ and Cl are 143 pm and 181 pm, respectively. Use the radius-ratio rule to predict the ionic structure. Describe the properties of the unit cell.
At 600 degrees C, the equilibrium constant for the reaction 2HgO(s) --> 2Hg (l) +O2 (g) is 2.8. Calculate the equilibrium constant for the reaction 1/2O2(g) + Hg(l) --> HgO (s)
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