In one or two sentences

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

In one or two sentences, explain why 0.50 mol0.50\,\text{mol} of O2(g)\mathrm{O_2(g)} contains 6.02×10236.02\times10^{23} oxygen atoms even though Avogadro’s number refers to particles per mole.

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