
Zand G. answered 04/20/20
Tutor
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Patient SAT, ACT, and Math Tutor from Carnegie Mellon University
Hi there just use Avogradro's number, which is 6.022 x 10^23 molecules / 1 mol. So, using dimensional analysis:
Do 3 moles x (6.022 x 10^23 molecules / 1 mol) to get about 1.8 x 10^24 molecules.