The number of oxygen atoms that are present in 0.500 mole carbon dioxide is 6.02×10²³ atoms.
What is Avogadro's number?
Avogadro's number is the number of atoms which are present in 1 mole of any substance and it is equal to 6.022×10²³.
Given moles of carbon dioxide = 0.5 mol
Number of molecules of CO₂ in this given moles will be calculated as:
No. of atoms = (0.5mol)( 6.022×10²³molecules/mol) = 3.01×10²³molecules
In single molecule of CO₂, two oxygen atoms are present, so total number of atoms of oxygen in given molecules will be:
No. of oxygen atoms = 2(3.01×10²³) = 6.02×10²³ atoms
Hence required number of oxygen atoms are 6.02×10²³atoms.
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