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Marina CMI [18]
3 years ago
6

What are the three main gases that make up the atmosphere?

Chemistry
1 answer:
Nat2105 [25]3 years ago
5 0

Nitrogen — 78 percent.

Oxygen — 21 percent.

Argon — 0.93 percent.

Carbon dioxide — 0.04 percent.

Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor.

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Why is water sometimes called the ""universal solvent?"".
Marysya12 [62]

Answer:

Water is called the universal solvent because more substances dissolve in water than in any other chemical. This has to do with the polarity of each water molecule. The hydrogen side of each water (H2O) molecule carries a slight positive electric charge, while the oxygen side carries a slight negative electric charge.

Explanation:

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The Earth and the spaceship both have mass. The astronaut is attracted to Earth by gravity, but he is not attracted to the space
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The spaceship does not have any gravitational pull. A spaceship can not produce its own gravity like Earth does.
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3 years ago
Given a magnesium value of 4.5mg/dL what is the result in SI units? gram atomic weight of Mg = 24
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Explanation:

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How many molecules of oxygen gas (O2) are in 8 grams of oxygen
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Answer:Hence, in 8g of Oxygen molecules, there are 3. 011 x 10²³ Oxygen atoms. In this way, how many moles are in 16 grams of oxygen? In other words, 1 mole of oxygen would contain molecules

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8 0
3 years ago
Read 2 more answers
22. Which statement best describes the use of catalytic converters in automobiles?
AysviL [449]

Answer:

B. They oxidize hydrocarbons to form less toxic gases.

Explanation:

A catalytic converter can be defined as an anti-pollution device containing a catalyst like platinum-iridium, installed in the exhaust chamber of an automobile so as to chemically convert harmful (poisonous) pollutants such as unburned hydrocarbons and carbon monoxide (CO), sulfur dioxide (S02), nitrogen oxide (NO) etc., into less harmful, poisonous or toxic chemical compounds.

This ultimately implies that, catalytic converters are typically used for converting harmful gases into less harmful, poisonous or toxic gases and molecules e.g carbon dioxide (C02) and water (H2O). This helps to prevent global warming, enhance the conservation of natural resources, as well as preserve the lives of living organisms and their natural habitat.

<em>Hence, the statement which best describes the use of catalytic converters in automobiles is that they oxidize hydrocarbons to form less toxic gases.</em>

3 0
3 years ago
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