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Atomic Mass of C = 14g/mol

Atomis mass of O = 16g/mol

Molecular mass of CO2 = 12 + 2(16) = 44g/mol

number of moles = mass / molecular mass

number of moles = 220g / 44g/mol = 5.0mol

1 mole of substance contains approximately 6.02 x 10^23 of its particles

5.0 moles of CO2 have 5.0 x 6.02 x 10^23 = 3.01 x 10^24 CO2 molecules.

Each CO2 molecule contains 2 oxygen atoms.

Total number of Oxygen atom = 2 x 3.01 x 10^24 = 6.02 x 10^24 atoms

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Q: How many atoms of oxygen are there in 220g of carbon dioxide?
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