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Answer :

Assuming the number of moles give is of CO₂, since we know that 1 mol is equivalent to 22.4 L in this case, we can use rule of three to answer this:

V ---- n

x ---- 3.75 mol

22.4 L ---- 1 mol

So, we have the follwing relation:

[tex]\begin{gathered} \frac{x}{22.4L}=\frac{3.75}{1} \\ x=3.75\cdot22.4\cdot L \\ x=84L \end{gathered}[/tex]

So, we need a volume of 84 L.