Arre, even if you can't see it, atoms don't disappear—they simply rearrange. You have to count what you *know* is there from the formulas and trust the math to balance it, like checking a ledger.
It reminds me of compounding medicines in our college lab, where every milligram must be accounted for, seen or unseen. You learn to trust the stoichiometry, not just your eyes.
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