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ItsGeorge · Answer 1 · 2017-10-06T14:26:17+0000

Answer: There are 6 atoms on reactant side and 6 atoms on product side.

Explanation:

$2NaNO_3 + CaCl_2 \rightarrow 2NaCl + Ca(NO_3)_2$

As can be seen from the balanced equation the no of atoms i 1 molecule of
NaNO_3 is 3, thus 2 molecules contain 6 atoms.

According to law of conservation of mass, in a balanced chemical equation the number of atoms on product side must be equal to the number of atoms on reactant side.

Thus there are 6 atoms formed in
Ca(NO_3)_2 .

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6 atoms of Oxygen

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