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Calculate the number of gaseous molecules left in a volume of \( 1 \mathrm{~mm}^{3} \) if it is pumped out to give a vaccum of \( 10^{-6} \mathrm{mmHg} \) at \( 298 \mathrm{~K} \).
1) \( 3.24 \times 10^{7} \)
2) \( 3.24 \times 10^{6} \)
3) \( 3.82 \times 10^{5} \)
4) \( 4.6 \times 10^{6} \)
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