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ikadub [295]
3 years ago
14

Which of these species are free radicals? check all that apply. check all that apply. no2 no o o2 o3?

Chemistry
1 answer:
professor190 [17]3 years ago
4 0
Answer: NO2, NO, and O2.

<span>Free radicals are toxic substances produced by the body. In normal circumstances,the body can neutralize but<span> when the level of these substances is to much,they accumulate and can generate diseases, such as osteoporosis and cancer.</span></span>


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Can someone help me with questions 4-5 <br> 21 points
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4. describe three ways carbon dioxide was removed from the Earth's atmosphere.

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5. Explain why there is now 21% Oxygen in the Earth's atomosphere compaired to little or no Oxygen in the Earth's atmosphere 4.5 billion years ago.

Answer: cientists believe that the Earth was formed about 4.5 billion years ago. Its early atmosphere was probably formed from the gases given out by volcanoes. It is believed that there was intense volcanic activity for the first billion years of the Earth's existence.The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. There were smaller proportions of water vapour, ammonia and methane. As the Earth cooled down, most of the water vapour condensed and formed the oceans.

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8 0
3 years ago
How many electrons does the oxygen atom need to become stable?
NemiM [27]

Answer:

2 electrons

Explanation:

Oxygen has 6 valence electrons and to be stable it needs 8. That means it needs 2 more electrons to have a full octet.

4 0
3 years ago
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40 Points!!! Match the correct definition with the correct keyword.
My name is Ann [436]

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8 0
3 years ago
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Elis [28]

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6 0
3 years ago
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A cylinder is labeled \"PENTANE.\" When the gas inside the cylinder is monochlorinated, five isomers of formula C5H11Cl result.
melisa1 [442]

Answer:

a mixture of two these

Explanation:

The number of isomeric monochlorides depends on the structure and number of equivalent hydrogen atoms in each isomer of pentane.

n-pentane has three different kinds of equivalent hydrogen atoms leading to three isomeric monochlorides formed.

Isopentane has four different types of equivalent hydrogen atoms hence four isomeric monochlorides are formed.

Lastly, neopentane has only one type of equivalent hydrogen atoms that yields one mono chlorination product.

Hence the cylinder must contain a mixture of isopentane and neopentane which yields four and one isomeric monochlorides giving a total of five identifiable monochloride products as stated in the question.  

8 0
3 years ago
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