Answer:
hello!
Explanation:
A pure substance needs only be made up of only one kind of molecule or it could be an ionic or metallic solid made up only of the atoms in the empirical formula, not necessarily one kind of atom. It is possible to have pure carbon dioxide, pure water, pure oxygen gas pure NaCl solid and pure solid iron, in theory only. It’s literally impossible to ensure that every single atom or molecule of ‘something else’ is removed from anything.
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