Write the molecular formula of calcium carbonate.
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Solution and Explanation
Step 1: Understanding calcium carbonate
Calcium carbonate is a chemical compound composed of calcium (\(\text{Ca}\)), carbon (\(\text{C}\)), and oxygen (\(\text{O}\)).
Step 2: Writing the molecular formula
- Calcium (\(\text{Ca}^{2+}\)) is a divalent cation. - Carbonate (\(\text{CO}_3^{2-}\)) is a polyatomic anion. - Since their charges balance each other (\(+2\) and \(-2\)), they combine in a 1:1 ratio, forming the molecular formula \(\text{CaCO}_3\). Thus, the correct molecular formula of calcium carbonate is \(\text{CaCO}_3\).
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