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mash [69]
3 years ago
15

A what is matter that is always composed of the same combination of atoms

Chemistry
1 answer:
Bingel [31]3 years ago
7 0

Answer:

A substance

Explanation:

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If you are using 3.00% (mass/mass) hydrogen peroxide solution and you determine that the mass of solution required to reach the
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Answer:

0.004522 moles of hydrogen peroxide molecules are present.

Explanation:

Mass by mass percentage of hydrogen peroxide solution = w/w% = 3%

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