In the chemical reaction, CaCl2+Na2Co3 yields CaCo3 + NaCl why does Co3 still keep the subscript of 3 even though when you crossed the positive 2 and negative two charges they canceled each other out?
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Expert's answer
2013-03-01T06:02:18-0500
It is a reaction of exchange. CO3 is an ion. Noneof its components changes its charge. So CO3 still has thesubscript of 3.
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