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LekaFEV [45]
3 years ago
9

What new information can you add to your definition of chemical change?

Chemistry
1 answer:
ivolga24 [154]3 years ago
5 0
Something that can not be undone. Like baking bread..cant be undone.
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A introduction paragraph about coal and natural gas
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Answer:

here is ur and

Explanation:

Coal, oil and natural gas are called fossil fuels. Fossil fuels are burned to make energy. Burning fossil fuels also releases CO2 (carbon dioxide) gas into the atmosphere. Most air pollutants (such as sulfur dioxide) don't stay in the atmosphere very long.

pls mark.me as brainliest

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what pressure must be applied to compress a gas from 85 L at 3.5 atm to 15 L? a-17.3atm b-24.7atm c-19.8atm d-21.4atm
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In a fluorine atom, on which energy level are the valence electrons found?
aivan3 [116]

Answer:

second energy level

Explanation:

Valence electrons are those electrons which are present in outer most orbital of the atom.

This can be easily found through the electronic configuration of atom.

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F₉ = 1s² 2s² 2p⁵

We can see that the valence electrons are present in second energy level of F atom.

There are seven valence electrons of fluorine.

It is called halogens.

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Fluorine:

1. it is yellow in color.

2. it is flammable gas.

3. it is highly corrosive.

4. fluorine has pungent smell.

5. its reactions with all other elements are very vigorous except neon, oxygen, krypton and helium.  

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How did the construction of a parking lot, hiking trail, and playground affect the fish populations in the pond? PLEASE HELP.
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A),b),c),d) answers?
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How to go this problem
spin [16.1K]
Dccccccccccccccccccccccsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
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