Write a balanced chemical equation for the reaction of aqueous sodium carbonate with aqueous barium chloride to form solid barium carbonate and aqueous sodium chloride.

Na₂CO₃(aq) + BaCl₂(aq) → BaCO₃(s) + 2NaCl(aq)

Explanation:

A double-replacement reaction is defined as a reaction where two compounds react, forming two new compounds or products. In the reaction of the problem:

Aqueous sodium carbonate -Na₂CO₃(aq)- and aqueous barium chloride -BaCl₂(aq)- produce solid barium carbonate -BaCO₃(s)- and aqueous sodium chloride -NaCl(aq)-. The reaction is:

Na₂CO₃(aq) + BaCl₂(aq) → BaCO₃(s) + 2NaCl(aq)

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metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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