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CaCO3 is chalk and it contains one atom calcium.

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Q: How many atoms of calcium are in one molecule of chalk?
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How many atoms of oxygen is there in calcium carbonate?

There are three atoms of oxygen per calcium carbonate molecule. name: chalk IUPAC name: calcium carbonate compound formula: CCaO3 formula: CaCO3 (This information was obtained from http://www.wolframalpha.com)


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