The unbalanced equation is one in which the moles of atoms are not equal on both sides of the reaction.
<h3>What is a balanced chemical equation?</h3>
A balanced chemical equation is one in wgich the moles of atoms in the reactants side is equal to the moles of atoms on the product side.
The given equations of reaction is not clearly stated.
Therefore, the unbalanced equation is one in which the moles of atoms are not equal on both sides of the reaction.
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The accepted concentration of chlorine is 1.00 ppm that is 1 gram of chlorine per million of water.
The volume of water is
.
Since, 1 gal= 3785.41 mL
Thus, 
Density of water is 1 g/mL thus, mass of water will be
.
Since, 1 grams of chlorine →
grams of water.
1 g of water →
g of chlorine and,
of water →86.6 g of chlorine
Since, the solution is 9% chlorine by mass, the volume of solution will be:

Thus, volume of chlorine solution is 9.62\times 10^{2} mL.
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