contestada

Which sentence describes the energy changes that take place when this
chemical reaction occurs?
ca + mgcl2 - mg +cacl2
o a. energy is absorbed to break bonds in mgcl, and to form bonds in
cacl2
b. energy is absorbed to break bonds in mgcl2 and released when
the bonds in cacl, form.
c. energy is released when bonds in mgcl2 break and when bonds in
cacl2 form
o d. energy is released to break bonds in mgcl, and absorbed when
the bonds in cacl2 form.

Respuesta :

Energy is absorbed to break bonds in mgcl, and to form bonds in cacl2. Thus, the correct option is A.

How do chemical reactions occur?

The transformation that takes place in substances, wherein atoms rearrange themselves and alter their initial state, is what gives rise to chemical processes. As a result, chemical compounds alter and produce new molecules.

A replacement reaction is the sort of reaction implied by the chemical formula Ca + MgCl2 --- CaCl2 + Mg.

In this instance, energy is absorbed during the chemical reaction to break bonds in the reactants and build bonds in the products.

For more information regarding chemical reactions, visit:

https://brainly.com/question/11231920

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