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zhenek [66]
4 years ago
10

Which equation is a decomposition reaction? Li2CO3 Right arrow. Li2O + CO2 Zn + HCl Right arrow. ZnCl2 + H2 Na2O + CO2 Right arr

ow. Na2CO3 C6H12O6 + O2 Right arrow. CO2 + H2O
Chemistry
1 answer:
Dmitrij [34]4 years ago
3 0

Answer:

Li₂CO₃ ⇒ Li₂O + CO₂ is a decomposition reaction.

Explanation:

In a decomposition reaction, a single substance decomposes, producing two or more different substances. In other words, in this type of reaction two or more substances are formed from a compound. The atoms that form a compound separate to give the products according to the formula:

AB → A + B

It can occur spontaneously, or be aided by a catalyst, heat, or electrolysis.

In this case:

Li₂CO₃ ⇒ Li₂O + CO₂ It is a type of chemical reaction in which a single compound decomposes into two or more compounds. So it is a decomposition reaction.

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A compound contains 64.3% carbon, 7.14% Hydrogen, and 28.6% Oxygen. What is the empirical formula for this substance?
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Answer:

Empirical formula is C₃H₄O

Explanation:

Empirical formula:

It is the simplest formula gives the ratio of atoms of different elements in small whole number .

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Percentage of hydrogen = 7.14%

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Empirical formula = ?

Solution:

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Atomic ratio:

            C                  :         H            :         O

         5.4/1.8             :      7.1/1.8       :       1.8/1.8

            3                   :        4            :        1

C : H : O = 3 : 4 : 1

Empirical formula is C₃H₄O.

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