2 years ago

Gold and helium are examples of a(n)

Chemistry

1 answer:

kogti [31]2 years ago

4 0

I guess examples of solid and gas???? You have to be more descriptive.....

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The answer is A. Cohesion

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2 years ago

URGENT WILL GIVE BRAINLEIST In two or more complete sentences explain how to balance the chemical equation,

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Silver chloride breaks down to form silver and chlorine in the presence of light. What type of reaction is this?

Vitek1552 [10]

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3 years ago

Will give 99 pts!!! Describe in detail what you know about the enthalpy, entropy, and free energy changes when a sample of gas c

Nimfa-mama [501]

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Sodium thiosulfate, Na 2S 2O 3, is used as a "fixer" in black and white photography. Identify the reducing agent in the reaction

Tatiana [17]

Answer: Reducing agent in the given reaction is $S_{2}O^{2-}_{3}$ .

Explanation:

A reducing agent is defined as an element which tends to lose electrons to other element leading to an increase in its oxidation number.

In the given reaction, oxidation state of sulfur in $S_{2}O^{2-}_{3}$ is +2 and $I_{2}(aq)$ has 0 oxidation state.

In $S_{4}O^{2-}_{6}(aq)$ oxidation state of S is 2.5 and in $2I^{-}(aq)$ oxidation state of I is -1.

Since, an increase in oxidation state of S is occurring from +2 to +2.5. Hence, it is acting as a reducing agent.

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