Chemistry In Context
9th Edition
ISBN: 9781259638145
Author: Fahlman, Bradley D., Purvis-roberts, Kathleen, Kirk, John S., Bentley, Anne K., Daubenmire, Patrick L., ELLIS, Jamie P., Mury, Michael T., American Chemical Society
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 5, Problem 59Q
An article in Scientific American pointed out that replacing a 75-watt incandescent bulb with an 18-watt compact fluorescent bulb would save about 75% in the cost of electricity. Electricity is generally priced per kilowatt-hour (kWh). Using the price of electricity where you live, calculate how much money you would save over the life of one compact fluorescent bulb (about 10,000 h). Note: Standard incandescent bulbs last about 750 h.
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A number of companies currently lease solar panels to homeowners to offset the home’s energy use. The total energy production of a certain residential solar system in suburban Maryland was 7581.62 kWh over the last calendar year. What mass of carbon dioxide did this solar system keep out of the atmosphere during that time, assuming that the energy consumed by this home would otherwise have been supplied solely by coal-burning power plants (note that this isn’t a great assumption, as Maryland also has a nuclear power plant, solar and wind farms, and Montgomery County incinerates waste to generate electricity)? Keep in mind that power plants are inefficient, and are able to convert on average 33% of the heat generated by the combustion of coal into electricity. Assume that coal can be approximated as C(s) (again, not a great assumption, but sufficient for this problem). Use the following data to find the heat of combustion of coal:
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Chapter 5 Solutions
Chemistry In Context
Ch. 5.1 - Prob. 5.1YTCh. 5.1 - Prob. 5.2YTCh. 5.1 - Consult the interactive trends found in the...Ch. 5.1 - Prob. 5.4YTCh. 5.2 - For each of the fuels below, write the balanced...Ch. 5.2 - Prob. 5.6YTCh. 5.3 - Prob. 5.7YTCh. 5.4 - Prob. 5.8YTCh. 5.4 - Prob. 5.9YTCh. 5.4 - Scientific Practices Coal Versus Ethanol On the...
Ch. 5.5 - Prob. 5.12YTCh. 5.5 - Prob. 5.13YTCh. 5.6 - Although power plants require several steps to...Ch. 5.7 - Prob. 5.15YTCh. 5.7 - Prob. 5.16YTCh. 5.7 - An input of energy can be used to decrease entropy...Ch. 5.8 - Prob. 5.18YTCh. 5.8 - Prob. 5.19YTCh. 5.8 - Prob. 5.20YTCh. 5.8 - Prob. 5.21YTCh. 5.10 - Prob. 5.22YTCh. 5.11 - The combustion of one gram of natural gas releases...Ch. 5.11 - a. During the extraction of natural gas, the...Ch. 5.12 - Prob. 5.25YTCh. 5.13 - Prob. 5.26YTCh. 5.13 - Beginning in the 1920s, the octane-booster...Ch. 5.15 - Prob. 5.28YTCh. 5.15 - Prob. 5.29YTCh. 5.16 - Prob. 5.30YTCh. 5.17 - Have you ever been served cherries Jubilee or...Ch. 5.17 - Prob. 5.34YTCh. 5 - Prob. 1QCh. 5 - Prob. 2QCh. 5 - Prob. 3QCh. 5 - Energy exists in different forms in our natural...Ch. 5 - A coal-burning power plant generates electrical...Ch. 5 - Prob. 6QCh. 5 - Prob. 7QCh. 5 - Prob. 8QCh. 5 - Mercury (Hg) is present in trace amounts in coal,...Ch. 5 - Prob. 10QCh. 5 - Here are the condensed structural formulas for two...Ch. 5 - Prob. 12QCh. 5 - Prob. 13QCh. 5 - Consider these three hydrocarbons: At room...Ch. 5 - During petroleum distillation, kerosene and...Ch. 5 - Prob. 16QCh. 5 - a. Write the balanced chemical equation for the...Ch. 5 - Prob. 18QCh. 5 - Prob. 19QCh. 5 - State whether these processes are endothermic or...Ch. 5 - Use the bond energies in Table 5.1 to calculate...Ch. 5 - Use the bond energies in Table 5.1 to calculate...Ch. 5 - Ethanol can be produced by fermentation. Another...Ch. 5 - Here are structural formulas for ethane, ethene...Ch. 5 - These three compounds all have the same chemical...Ch. 5 - Catalysts speed up cracking reactions in oil...Ch. 5 - Explain why cracking is a necessary part of the...Ch. 5 - Consider this equation representing the process of...Ch. 5 - Prob. 29QCh. 5 - Consider these three alcohols: methanol, ethanol,...Ch. 5 - Prob. 31QCh. 5 - Prob. 32QCh. 5 - Prob. 33QCh. 5 - Compare and contrast a molecule of biodiesel with...Ch. 5 - Use Figure 5.6 to compare the energy released for...Ch. 5 - Prob. 36QCh. 5 - The sustainability of burning coal (and other...Ch. 5 - In this chapter, we approximated the chemical...Ch. 5 - Prob. 39QCh. 5 - Compare the processes of combustion and...Ch. 5 - How might you explain the difference between...Ch. 5 - Write a response to this statement: Because of the...Ch. 5 - The concept of entropy and probability is used in...Ch. 5 - Bond energies such as those in Table 5.1 are...Ch. 5 - Use the bond energies in Table 5.1 to explain why...Ch. 5 - Prob. 46QCh. 5 - Prob. 47QCh. 5 - Prob. 48QCh. 5 - Prob. 49QCh. 5 - Prob. 50QCh. 5 - Prob. 51QCh. 5 - Prob. 52QCh. 5 - Prob. 53QCh. 5 - Use a diagram to show the relationship among these...Ch. 5 - On a timescale of a few years, the combustion of...Ch. 5 - Emissions of some pollutants are lower when...Ch. 5 - Although coal contains only trace amounts of...Ch. 5 - Prob. 58QCh. 5 - An article in Scientific American pointed out that...Ch. 5 - C. P. Snow, a noted scientist and author, wrote an...Ch. 5 - Chemical explosions are very exothermic reactions....Ch. 5 - Prob. 63QCh. 5 - Tetraethyllead (TEL) was first approved for use in...Ch. 5 - Tetraethyllead (TEL) has an octane rating of 270....Ch. 5 - Another type of catalyst used in the combustion of...Ch. 5 - Figure 5.8 shows energy differences for the...Ch. 5 - Prob. 68Q
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