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monitta
3 years ago
5

lighting a match results in light and heat since energy was not created by the match what transformation took place

Chemistry
2 answers:
Contact [7]3 years ago
7 0

It is a chemical reaction


BabaBlast [244]3 years ago
3 0
It’s a chemical reaction
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the answer is d .

Explanation:

all of these have pollutants and chemicals in them , damaging the ozone with carbon dioxide .

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2 years ago
Find the atomicity of water.​
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One molecule of water contains two atoms of hydrogen and one atom of oxygen, the atomicity of water is three.
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What neutral element has the electron configuration described by the Aufbau diagram above.​
devlian [24]

Answer:

Aluminium.

Explanation:

The above electronic configuration can be written in a simplified form as shown below:

1s² 2s²2p⁶ 3s²3p¹

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Comparing the atomic number of the element with those in the periodic table, the element with the above electronic configuration is aluminium since no two elements have the same atomic number.

5 0
3 years ago
The iron content of foods can be determined by dissolving them in acid (forming Fe3+), reducing the iron(III) to iron(II), and t
____ [38]

Answer:

  • <em>Oxidation half-reaction</em>:

Fe²⁺(aq) →  Fe³⁺(aq) + 1e⁻

  • <em>Reduction half-reaction</em>:

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Explanation:

The reaction that takes place is:

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The <em>oxidation half-reaction</em> is:

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It is an oxidation because the oxidation state of Fe increases from 2+ to 3+.

The <em>reduction half-reaction</em> is:

  • Ce⁴⁺(aq) + 1e⁻ →  Ce³⁺(aq)

It is a reduction because the oxidation state of Ce decreases from 4+ to 3+.

4 0
3 years ago
PLEASE HELPPPP???!!!!!!
sertanlavr [38]
Mass of molecule (g) = Mr of substance over avarogado constant
5 0
3 years ago
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