A diagram of the composition of air would be the air's chemical formula and it's structure.
An atom is the smallest you can get to identify the element.
<span>2AlPO4 ( aq) + 3MgCl2 (aq) -> Mg3(PO4)2 (s) + 2AlCl3 (aq) </span>
<span>Right answer is D
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I think it’s :answer choice c