Chapter 8: Problem 20
List at least five ways in which your life benefits from fossil fuels.
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Chapter 8: Problem 20
List at least five ways in which your life benefits from fossil fuels.
These are the key concepts you need to understand to accurately answer the question.
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Get started for freeOne liter of gasoline \((1,000 \mathrm{~mL})\) has a mass of about \(750 \mathrm{~g}\) and contains about \(9.7 \mathrm{kWh}\) of energy. Meanwhile, a typical AA battery occupies \(7.4 \mathrm{~mL}\) of volume at a mass of \(23 \mathrm{~g}\), while holding about \(0.003 \mathrm{kWh}\) of energy. How much volume and how heavy would a collection of AA batteries be in order to match the energy in a liter of gasoline, and by what factors (in volume and mass) is gasoline superior?
It is hard for many people to appreciate that fossil fuels will not just "run out one day," because they don't appreciate the substantial amount of work that must go into extracting the resource from a reluctant ground. What common, day-to-day personal experiences do you imagine contributes to this disconnect? \(^{89}\)
Let's say that Earth was originally endowed with one million flerbits, \({ }^{87}\) and that we have already used up 400,000 of them. We currently extract 15,000 per year. How long does the \(\mathrm{R} / \mathrm{P}\) ratio suggest the resource will last?
Explain, both in practical and mathematical terms, why the \(\mathrm{R} / \mathrm{P}\) ratio overestimates the time remaining for a resource if the rate of production (use) of that resource is continually increasing.
What if we could get our energy from drinking gasoline? \(^{82}\) Referring to Table \(8.2\), how many grams of gasoline \(^{83}\) would we have to drink daily to satisfy the typical 2,000 kcal/day diet? How much volume does this represent if gasoline is \(0.75 \mathrm{~g} / \mathrm{mL}\) ? Relate this to a familiar container for holding liquids. 8
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