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attashe74 [19]
3 years ago
8

Plz help if you can!!!

Chemistry
1 answer:
Shkiper50 [21]3 years ago
5 0

Answer:

The answer to your question is: A and C are elements. Substance D is a compound.

Explanation:

We know that A and C cannot be broken down into anything simpler then we conclude  that they are elements.

Also know that B is composed by A and D and are not chemically bonded, so we conclude that B is a mixture

Finally, D can be decomposed into A and C, so it's a compound.

The only possible answer is the last one.

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