13 amu. The difference between the lightest and heaviest molecular masses of carbon tetrachloride is how many amu? (1) $6$ (2) $7$ (3) $8$ (4) $9$
\textbf{13 amu}. The difference between the lightest and heaviest molecular masses of carbon tetrachloride is how many \textbf{amu}?
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(1) $6$ \hfill (2) $7$ \hfill (3) $8$ \hfill (4) $9$
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