\textbf{215-} $9.033 \times 10^{23}$ iron atoms are present and react with sufficient sulfuric acid, how many liters of hydrogen gas are produced? (The density of hydrogen gas at reaction conditions is $0.08\ \mathrm{g.L^{-1}}$. Read the options from right to left.)
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(1) $4/5 \circ /18$ \qquad (2) $3/9 \circ /18$ \qquad (3) $3/25 \circ /15$ \qquad (4) $3/75 \circ /15$
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