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Alina [70]
3 years ago
11

In the reaction 4Al+3O2→_Al2O3 , what coefficient should be placed in front of the Al2 to balance the reaction?

Chemistry
2 answers:
VikaD [51]3 years ago
8 0

Answer:

the answer is 2

Explanation:

nika2105 [10]3 years ago
6 0

Sorry I came a lil late,

The answer to your question is, 2.

Hope this helps! :)

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Many towns in flood-prone areas are surrounded by___ that are built to hold back rising water.
xxTIMURxx [149]

Answer:

Flood barriers

Explanation:

Many towns in flood-prone areas are surrounded by flood barriers that are built to hold back rising water during seasonal highs.

  • Flood barriers are water resistant walls that are used to prevent breaking water during a high period of inundation from their channels.
  • They are usually vertical artificial structures which can be temporary or permanent.
  • They help to hold or contain the flood water during the high season.
  • These walls prevents flood plains and other nearby areas from getting flooded during the rainy season.
8 0
3 years ago
What do carbon, hydrogen, and oxygen atoms have in common?
horsena [70]

Answer:

electrons located outside the nucleus

Explanation:

electrons are said to be located outside the nucleus of an atom and are in orbit around the nucleus.

according to Bohr in 1913.

6 0
2 years ago
A trophic level is a number that tells you the position an organism occupies in a food chain or food pyramid.
svet-max [94.6K]

Answer:

true

Explanation:

8 0
3 years ago
Explain why ionic compound do not form molecules.
Darina [25.2K]

Answer:

Because a molecule, by definition, has a valence of zero

(neutral charge, stable). Also by definition, an ion has a positive

or negative charge or valence and is not stable.

Explanation:

7 0
3 years ago
Sheela wants to make a computer model of a land ecosystem. Part of her model simulates the chemical processes of photosynthesis
shusha [124]
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5 0
3 years ago
Read 2 more answers
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