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Rom4ik [11]
3 years ago
15

Please help (: What are the sources and stages of a river ?

Chemistry
2 answers:
krek1111 [17]3 years ago
7 0

Water, ALSO if you cant figure out the answer looking up on g00gl3e

defon3 years ago
5 0

3 Stages of a River

YOUTHFUL STAGE (UPPER COURSE) – V- Shaped Valley > Erosion. ...

MATURE STAGE (MIDDLE COURSE) – Meanders > Erosion and Deposition.

OLD AGE STAGE (LOWER COURSE) – Floodplains > Deposition. ...

Advantages. Scenic Attraction. ...

Dangers. Flooding – Damage to property, land, animals and homes. ...

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The chemical reaction in which two molecules combine to form a larger molecule, and water is released is called
Semmy [17]

Answer: condenstation.


Justification:


The polymerization by condensation is a well know chemical reaction in which two monomers ("small" molecules), each with (at least) two functional groups, combine and relase water as by-product. Actually, even if the by-product released is not water, yet the reaction is called condenstation, since the mechanism is basically the same.


An example of such reaction is the manufacturing of nylon 6,6, which is produced from adipic acid and 1,6-diamine hexane:


HOOC - [CH₂]₄ - COOH + nH₂N - [CH₂]₆ - NH₂ → - nylon - + nH₂O


I omitted the formula of nylon because it is large, and that is not the core of the question but the fact the kind of reaction: two molecules combine to form is a larger molecule, and water is released

7 0
2 years ago
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Difference between emprical and molecular formula
Musya8 [376]

Answer:

The key difference between empirical and molecular formulas is that an empirical formula only gives the simplest ratio of atom whereas a molecular formula gives the exact number of each atom in a molecule.

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zalisa [80]

it's the third one The chemical equation will have two arrows pointing in different directions. !

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which gas law would you use to calculate the new pressure for a gas when the volume of the trapped gas changes while the tempera
meriva
Answer: Boyle's Law

-----

Boyle's Law is the pressure-volume law and it relates pressure and volume at constant temperature. Boyle's law states that pressure and volume vary inversely, meaning that as one goes up, the other one goes down.
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What is a serial dilution?
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A serial dilution is the stepwise dilution of a substance in solution. Usually the dilution factor at each step is constant, resulting in a geometric progression of the concentration in a logarithmic fashion.

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