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Ch.18 - Chemistry of the Environment

Chapter 18, Problem 5

Where does the energy come from to evaporate the esti- mated 425,000 km3 of water that annually leaves the oceans, as illustrated here? [Section 18.3]

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Hi everyone for this problem, we're told the light energy from the sun is the main source of energy for photosynthesis true or false. So we want to state whether this statement is true or false. So let's go ahead and talk about photosynthesis. So in photosynthesis plants convert light energy from the sun to chemical energy. And this statement says the light energy from the sun is the main source of energy for photosynthesis. So this statement is going to be true. Okay, this statement is true because, as we said in photosynthesis, plants convert light energy from the sun to chemical energy. That's the end of this problem. I hope this was helpful.
Related Practice
Textbook Question

The figure shows the three lowest regions of Earth's atmo- sphere.

(d) An aurora borealis is due to excitation of atoms and molecules in the atmosphere 55–95 km above Earth's surface. Which regions in the figure are involved in an aurora borealis?

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Textbook Question

You are working with an artist who has been commissioned to make a sculpture for a big city in the eastern United States. The artist is wondering what material to use to make her sculpture because she has heard that acid rain in the eastern United States might destroy it over time. You take samples of granite, marble, bronze, and other materials, and place them outdoors for a long time in the big city. You periodically examine the appearance and measure the mass of the samples. (a) What observations would lead you to conclude that one or more of the materials are well- suited for the sculpture?

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Textbook Question

You are working with an artist who has been commissioned to make a sculpture for a big city in the eastern United States. The artist is wondering what material to use to make her sculpture because she has heard that acid rain in the eastern United States might destroy it over time. You take samples of granite, marble, bronze, and other materials, and place them outdoors for a long time in the big city. You periodically examine the appearance and measure the mass of the samples. (b) What chemical process (or processes) is (are) the most likely responsible for any observed changes in the materials? [Section 18.2]

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Textbook Question

(a) What is the primary basis for the division of the atmosphere into different regions?

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Textbook Question

(a) How are the boundaries between the regions of the atmosphere determined?

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Textbook Question

(b) Explain why the stratosphere, which is about 35 km thick, has a smaller total mass than the troposphere, which is about 12 km thick.

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