Câu 38:
\(V_{SO_2}=0,5.22,4=11,2l\\ V_{O_2}=\left(\dfrac{32}{32}\right).22,4=22,4l\)
\(\Rightarrow V_{hh}=5,6+11,2+22,4=39,2l\)
\(\RightarrowĐáp.án.C\)
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