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vagabundo [1.1K]
4 years ago
5

For which substance does (triangle) Hf = 0

Chemistry
1 answer:
umka21 [38]4 years ago
7 0

Answer:

O3 ozone

Explanation:

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2Ag + H2S ? Ag2S + H2 Which statement is true about this chemical equation? A) Ag (silver) is oxidized and H (hydrogen) is reduc
nadezda [96]

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It is A).

Explanation:

Silver (Ag) goes from the  pure metal to Ag+ losing 1 electron so it is oxidised.

The hydrogen ion  gains electrons and is reduced.

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3 years ago
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Make the equations for the reactions between calcium and hydrochloric acid, name the products.
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Why are the oxidation and reduction half-reactions separated in an<br> electrochemical cell?
Mrac [35]

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The half-cells separate the oxidation half-reaction from the reduction half-reaction and make it possible for current to flow through an external wire.

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Assessment timer and count
Aneli [31]

Answer:

I think it's the last one.

Explanation:

Because gravity is what makes our planets stay still and stops our planets from dropping and as they orbit around the sun that's what keeps the moon from bumping into earth. I hope this helps and makes sense.

<h3>p.s. can I pls be ur brainliest answer, I'd appreciate it </h3>
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3 years ago
What type of a reaction occurs when a sodium hydroxide solution is mixed with an acetic acid solution?
Harman [31]

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C) acid-base neutralization

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NaOH + CH₃COOH = CH₃COONa + H₂O

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CH₃COOH = CH₃COO⁻ + H⁺

Combine the resulting solution after the reaction:

OH⁻ + H⁺ = H₂O

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