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3 years ago

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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Answer:

Value of $Q_{p}$ for the given redox reaction is $1.0\times 10^{-8}$

Explanation:

Redox reaction with states of species:

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So, $[H^{+}]=10^{-pH}$

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Coefficient is defined to as a number in front of a chemical formula in a balanced chemical equation.

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MoO2 + 2 H2→ Mo +2 H2O

From balanced equation above the coefficient for H2 is 2 since the number in front of H2 is 2

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