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3 years ago

The expression CaCO3 → CaO + CO2 is an example of a...???

Chemistry

1 answer:

nadezda [96]3 years ago

6 0

The expression CaCO3 → CaO + CO2 is an example of a chemical equation, and it is a textbook one.

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What species is reduced in the reaction below?

lesya692 [45]

Answer: The correct option is D) $Ag^+$

Explanation:

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when oxidation number of a species decreases.

For the given chemical reaction:

$Zn^0+2Ag^+\rightarrow Zn^{2+}+2Ag^0$

On the reactant side:

Oxidation number of Zn = 0

Oxidation number of Ag = +1

On the product side:

Oxidation number of Zn = +2

Oxidation number of Ag = 0

As the oxidation number of Ag is decreasing from +1 to 0. Thus, $Ag^+$ is getting reduced.

Hence, the correct option is D) $Ag^+$

5 0

3 years ago

Which of the following equalities is not correct?

Kryger [21]

1cm^3 = 1L would be the correct answer. One cubic centimeter equals .001 liter, so this equality above is not correct.

Please let me know if you have any questions! :)

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Under the same conditions of temperature and pressure how does a liquid differ from a gas

bagirrra123 [75]

Under the same conditions of temperature and pressure, a liquid differs from a gas because the particles of the liquid a) are in constant straight-line

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3 years ago

20 POINTS!!!

nasty-shy [4]

Answer:

300g of water because its a larger amount

Explanation:

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3 years ago

Identify the parts of the energy diagram

Aliun [14]

On the first graph the beginning flat line is the reaction. Then comes the hill will it be call the activation energy. The final flat line would be the produce. Same names apply to the 2 graph too

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3 years ago

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