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schepotkina [342]
3 years ago
7

Which substance is used in a sewage treatment system to kill harmful bacteria

Biology
1 answer:
slava [35]3 years ago
4 0
The answer to that is, Chlorine
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Temperate climates are generally defined as environments with moderate rainfall spread across the year or portion of the year with sporadic drought, mild to warm summers and cool to cold winters.

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The right answer for the question that is being asked and shown above is that: "a.Cyanobacteria are photoautotrophs." The atmosphere that we depend on for our survival is enriched by numerous cyanobacteria. This fact justifies the characteristic of cyanobacteria that is Cyanobacteria are photoautotrophs.

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Which of the following statements about magnesium atoms is NOT correct? 1. All magnesium atoms have the same number of protons.
Fantom [35]

Answer:

5. All magnesium atoms have the same number of neutrons

Explanation:

Magnesium (Mg) is a chemical element. Its atomic number (Z) is 12 (number of protons in the nucleus of the Mg atom).

The Magnesium has three stable isotopes: 24Mg, 25Mg and 26Mg. All these isoforms have 12 protons in their atoms (same atomic number), however they  vary in the mass number of the atom (M).

The mass number of the atom (M) is equal to the sum of protons and neutrons in the nucleus.

Based on this information we can know how many neutrons each isotope has

24 Mg = 12 protones + 12 neutrons

25Mg = 12 protones + 13 neutrons

26Mg = 12 protones + 14 neutrons

In this way we conclude that <u>not all magnesium atoms have the same number of neutrons</u>

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3 years ago
Which structure is a sealed capsule of clear fluid that focuses light to the back of the eye? A. cornea B. iris C. lens D. retin
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Ainhoa belonged to the rock club. She was learning about different types of rocks. Which of the following rocks is formed throug
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