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March 28, 2017

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a sample of carbon dioxide gas has a mass of 52.0g. how many oxygen atoms arr present?explain
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  • chemistry DONT spik - ,

    How many moles CO2 are present? That will be moles = grams/molar mass.

    Then there are 2 O atoms in 1 molecule CO2; therefore, multiply moles CO2 x 2 = moles O atoms.

    Finally, moles O atoms x 6.022E23 = # O atoms.

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