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Alenkasestr [34]
3 years ago
5

What is a characteristic of a lewis base?

Chemistry
1 answer:
statuscvo [17]3 years ago
8 0
A Lewis base is characterized as any species that can donate a lone pair of electrons the Lewis acid (which has a vacant orbital for the lone pair to bond with)

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Student follow up
sleet_krkn [62]

Answer:

Magnesium and calcium belong to the second group i. e. alkaline earth metals. They are known as earth metals because they are extracted from the earth. They are very reactive elements. Their reactivity increases when we go from top to bottom because the outermost electrons goes farther from the nucleus i. e. atomic radius increases so less energy is needed for its removal.

8 0
3 years ago
The process where bacteria takes nitrogen out of the air and makes it usable for other organisms is called
Likurg_2 [28]

Answer:

The process is called Nitrogen fixation

Explanation:

The nitrogen fixation is a process carried out by some prokaryotic microorganisms (bacteria), specifically those have the presence of the nitrogenase enzyme. The bacteria absorb the atmospheric nitrogen (N2) from the roots of plants, and the nitrogenase enzyme, with the help of two proteins that act as electron donors and acceptors (nitrogenase complex) reduce the nitrogen to ammonia (NH3), then the ammonia is ionized to NH4+ (ammonium). Followed by that, the ammonia is oxidated to nitrates and nitrites, which are finally absorbed again by plants.

7 0
4 years ago
Calcium carbonate thermally decomposes to produce calcium oxide and carbon dioxide. After
Dmitrij [34]

Answer:

1/45 or 0.0222 g/s

Explanation:

rate of reaction = quantity of reactant used/time taken

                            = (10-8)/90

                            = 1/45 or 0.0222 g/s

p.s add as brainliest

4 0
3 years ago
Pls help check dhe paper
Semmy [17]
A= 16.5x100=1650
b=120 divided by 100= 1.2lb
that’s all I know.
7 0
2 years ago
Read 2 more answers
How many elements are there?
svlad2 [7]

Answer:

118 is your answer!

5 0
3 years ago
Read 2 more answers
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