# Oxygen help: How many atoms of oxygen are there in 88g of CO2? - Help.com

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## How many atoms of oxygen are there in 88g of CO2?

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Divide the mass of the Co2 by the molar mass of CO2. You get this by adding the molar mass of carbon, and then of oxygen twice. So you get something like 48 grams per mole. Divide 88 by that. You now have the moles of carbon dioxide. A mole is 6.02 X 10^23 particles. Now, for every mole of carbon dioxide, you have two moles of oxygen. So, times the moles of CO2 by two, and then by 6.02 X 10^23. Then you have to get your answer to the right number of significant figures.

If this is wrong, dealwithit.jpg

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