Answer
$N=3.29\times10^{16}$
Work Step by Step
The number of molecules can be determined as
$N=n N_a$ where $N_a$ is Avogadro's number and $N_a=6.023\times10^{23}$
Therefore,
$N=5.47\times10^{-8}\times6.023\times10^{23}=3.29\times10^{16}$
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