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erastova [34]
3 years ago
15

What is the electron configuration for a neutral atom of selenium? For a neutral atom of beryllium?

Chemistry
1 answer:
Anni [7]3 years ago
7 0
Se
1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^4
<span><span><span>Be
1s^2 2s^2

</span></span></span>
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What organisims allowed for the build up of oxygen in the atmosphere?
Maru [420]

Answer:

The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen.

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IF ANSWER I WILL GIVE BRAINLESS
vovikov84 [41]

Answer:

Answer 9 - 100 joules energy was at the producer level

Answer 10 - Remaining energy is used in metabolism

Explanation:

Answer 9

The energy at each trophic level is only 10% of the energy at its previous trophic level.

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Answer 10

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3 years ago
Determine the oxidation states of the elements in the compounds listed. None of the oxygen-containing compounds are peroxides or
natka813 [3]

Answer:

Explanation:

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3 years ago
How are mitosis and meiosis similar? How are they different? Provide 1 way the two processes are the same and 2 ways the 2 proce
swat32

Answer:

Similar: both processes of cell division; both processes take place in the nucleus of the cell

Different: mitosis divides into 2, meiosis divides into 4; one is the division of body cells and the other is of specifically sex cells

Explanation:

https://byjus.com/biology/mitosis-and-meiosis/

^ this has more info!

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3 years ago
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bulgar [2K]

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likely be the same

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