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Carbon fossil fuels are utilized to power our vehicles, make oil, and even t-shirts. The EPA has determined that a car transforms a gallon of octane (C8H18) to 33.7 kWh (kilowatt*hours, an expression of energy) in order to power a vehicle.
1. Provide the balanced equation for the complete combustion of octane.
2. If a truck is able to drive 360 miles on a tank of octane (22 gallons) how much energy is needed to move the vehicle one mile? What mass of CO2 is produced per gallon of octane? (the density of octane is 0.703 g/mL)
3. According to the L.A times there are 253 million cars on American roads. Assuming that each car is driven 50 miles each day, five days a week determine the mass and volume of the CO2 produced and mass of octane needed to power them for a year (assuming 20 miles per gallon)?
orbitals in the HCl molecule, taking ?= -1.0 eV and the ionization of energy of atomic chlorine as 13.1 eV.
Compute the translational, rotational, vibrational (compute excluding and including the zero point energy term), as well as electronic (compute taking the zero of energy to be that of the ground state molecule as well as that of the separated atom..
the equilibrium would shift to the right producing more products the equilibrium would shift to the left producing more reagents the equilbrium would not be effected by the created pressure change the equilibrium would speed up the equilibrium wou..
A 0.3146 g sample of a mixture of NaCl(s) and KBr(s) was dissolved in water. The resulting solution required 38.50 mL of 0.08765 M AgNO3(aq) to preipitate the Cl- (aq)and Br-(aq) as AgCl(s) and AgBr(s). Calculate the mass percentage of NaCl(s) in ..
What mass of ammonium chloride should be added to 2.45L of a 0.145M NH3 in order to obtain a buffer with a pH of 9.45
the heat capacity of a bomb calorimeter is found to be 5.68 kjoc. when a 1.652 g sample of glucose is burned in the
what is the global pH change incurred after injection of the HCl? What would the pH change be if this same amount of 1.000 M HCl were put into a gallon of pure water?
A sample of an unknown gas with a mass of 3.24 g occupies a volume of 1.88 L at a pressure of 748 mmHg and a temperature of 20.0°C. If the unknown gas is composed of 2.78 g of carbon and the rest is hydrogen, what is its molecular formula
Find the equilibrium pH of a 10^-3 M NaCN solution by using graphical methods, try to find the equilibrium pH with the charge balance and separately with the proton condition.
the normal respiratory rate for a human being is 15.0 breaths per minute. the average volume of air for each breath is
Sulfuric acid,H2SO4 is a strong diprotic acid. A sample of aqueous solution of sulfuric acid has a concentration of 0.0582 M. Calculate the concentration of H3O+ ion, HSO4- and (SO4)2- ions from this solution. Ka = 1.18 * 10^-2
Compute the Gibbs free-energy change of the above reaction as it takes place in mitochondria at pH 7 and 25°C. Explain the concentration of reactants and products are [NADH]=2 mM, [NAD+]=1 mM, and PO2= 0.05 atm.
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