chemistry DONT spik
posted by anu .
a sample of carbon dioxide gas has a mass of 52.0g. how many oxygen atoms arr present?explain
please don't skip
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.