The sample with the largest number of oxygen atoms will be calcium perchlorate.
Number of atoms in a compound
Since we are not looking at the number of moles, the mass of the compounds has no bearing on the number of atoms of oxygen.
- The chemical formula for carbon dioxide is [tex]CO_2[/tex]. Thus, it has 2 atoms of oxygen.
- The chemical formula for potassium chlorate is [tex]KClO_3[/tex]. Thus, it has 3 oxygen atoms.
- The chemical formula for calcium perchlorate is [tex]Ca(ClO_4)_2[/tex]. Thus, it has 8 atoms of oxygen.
- The chemical formula for sodium hydroxide is NaOH. Thus, it has 1 atom of oxygen.
Therefore, the compound with the largest number of oxygen atoms is calcium perchlorate.
More on the number of atoms in compounds can be found here: https://brainly.com/question/1686912
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