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Fossil fuel power plants operate by using the energy from burning fuel such as coal to boil steam. A coal power plant releases approximately 0.441 kg of CO2 to the atmosphere for every MJ of electricity generated. Internal combustion engines burn gasoline (or diesel) to generate shaft power to drive automobiles. Typically, about 15% of the heat from combustion is lost and about 20% of the remaining energy is converted to shaft power.
Gasoline releases approximately 47 MJ for every kg burned, and is composed of 89% carbon by mass. Compute the mass of CO2 produced for every MJ of shaft power produced. Compare the CO2 emissions for power plants and internal combustion engines. If the car can travel 25 miles on a gallon of gas, compute the mass of CO2 expelled when travelling 100 miles.
A plug-in electric vehicle uses electricity to charge an onboard battery which converts the stored energy to shaft power to drive the vehicle. Battery energy is converted to shaft power at efficiencies around 80%. Transmission losses of 6% occur when transmitting electricity from the power plant to the charging station. Assuming the electric vehicle requires the same shaft energy as the internal combustion automobile to travel 100 miles, calculate the mass of CO2 expelled during electricity generation for the 100 mile trip. Compare the CO2 emissions from internal combustion engines and electric vehicles. In order to perform the calculations, find the percentage of electricity generated from fossil fuels in Georgia and assume all fossil plants exhibit similar performance as the coal plant described here. As a comparison find the fractions of energy generated by nuclear, fossil, and renewable sources for Georgia, Washington state, and the national average.
What is the value of at this temperature? 23.15 At this temperature the rate constant for the reverse reaction is 310. . What is for the reaction?
If you drop an object from a height of 1.5 m, it will hit the ground in 0.55 s. If you throw a baseball horizontally with an initial speed of 30 m/s from the same height, how long will it take the ball to hit the ground?
Problem- How much heat (in kJ) is evolved (under standard conditions) when 83.84 g of copper reacts to form copper(II) oxide
Which of the following aqueous solutions should demonstrate the most ideal behavior? A. 0.1 M K2SO4 B. 0.1 M CaCl2 C. 3.0 M LiF D. 0.1 M MgSO4 E. 0.1 M NaCl
The solubility product for strontiumcarbonate is 10-9.30 M2. The formation constant for the hydroxocomplex Sr(OH)+, is 100.82 M-1
an aqueous cacl2 solution has a vapor pressure of 81.6 mmhg at 50 c. the vapor pressure of pure water at this
Molten carbonate fuel cells fueled with H2 convert as much as 60% of the free energy released by the formation of water from H2 and O2 into electrical energy. Determine the quantity of electrical energy obtained from converting 1 mole of H2 into H..
What will happen to the equilibrium as OH- ions are added?
Use equations and words to explain how 2Px, 2Py, and 2Pz orbitals are constructed from 2P orbitals and the appropriate m1 components.
If a solution is made from 100 g of pentane and 100 g of hexane, what will be the mole fraction of pentane in the gas phase over that solution (if only hexane and pentane vapor are present)? Assume no deviation from Raoult's law
Determine the number of monochlorinated and dichlorinated products that can be obtained by chlorination of 3-methylpentane. (Consider constitutional isomers only. Do not count stereoisomers.)
Calculate the concentration of oxygen in mg/L required to completely oxidize the following organic compounds. Use 500 mg/L for the concentration of each compound.
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