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Vlad [161]
2 years ago
8

Which is a major drawback to the use of ethanol-based energy? OA. Burning ethanol releases greenhouse gases. B. Ethanol may run

out in the next 100 years. )C. The use of ethanol is only efficient near rivers. D. Ethanol creates toxic waste that must be stored forever​
Geography
1 answer:
yuradex [85]2 years ago
5 0

Major drawback to the use of ethanol-based energy is Ethanol creates toxic waste that must be stored forever​. Thus the correct answer is D.

<h3>What is Ethanol based energy?</h3>

Ethanol is a transportation fuel that is renewable and made in the United States. Ethanol used in low-level mixes or a gasoline-ethanol mixture comprising 51 percent to 83 percent ethanol, depending on area and season it helps to cut emissions.

Researchers have created a number of technologies for prospective improvements, particularly for value creation to waste generated, but the sugarcane ethanol sector has absorbed very little of them. These findings indicate that such methods have long-term harmful consequences for water and soil.

Therefore, option D Ethanol creates toxic waste that must be stored forever​ is correct answer.

Learn more about Ethanol, here:

brainly.com/question/12918250

#SPJ1

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In nuclear fission and fusion reactions mass is converted into energy. The average person in US uses around 100,000,000 J of ene
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Answer:

a) The yearly energy consumption for a US population of 300 million is 3\times 10^{16} J/year

b) The energy that would be released if a 60 kg person were converted entirely into energy is 5.4\times 10^{18} Joules.

c) 180 years would this amount of energy support a population of 300 million.

Explanation:

a) Average energy consumed by single person of US = 100,000,000 J/year

Then 300 million US citizen will consume:

300 million = 300 × 1,000,000 = 3\times 10^8

The yearly energy consumption for a US population :

100,000,000 J/year\times 3\times 10^8=3\times 10^{16} J/year

The yearly energy consumption for a US population of 300 million is 3\times 10^{16} J/year

b) E = m\times c^2

E = Energy from converted mass of m

c = speed of light

Given mass of person = m = 60 kg

E=60 kg\times (3\times 10^8 m/s)^2 = 5.4\times 10^{18} J

c) Energy calculated in part (b) = E=5.4\times 10^{18} J

The yearly energy consumption for a US population  of 300 million in an year = 3\times 10^{16} J/year

Let the that would be supported by 5.4\times 10^{18} Joules of energy be x.

x\times 3\times 10^{16} J/year=5.4\times 10^{18} J

x=\frac{5.4\times 10^{18} J}{3\times 10^{16} J/year}=180 years

180 years would this amount of energy support a population of 300 million.

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3 years ago
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