AP Chemistry
1.3 Elemental Composition of Pure Substances
A student analyzes a pure sample of calcium carbonate, \(\text{CaCO}_3\), used to neutralize acidic agricultural soil. What is the percent by mass of oxygen in pure \(\text{CaCO}_3\)? (The molar mass of \(\text{CaCO}_3\) is \(100.1 \text{ g/mol}\).)
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