[Hóa học 9] Các bác giúp em với!

M

muathu1111

[TEX]n_{O_2}=0,672:22,4=0,03 [/TEX] mol
[TEX]\Rightarrow n_O=0,06[/TEX] mol
[TEX]\Rightarrow m _{K+Cl}=2,45-0,03.32=1,49 (g)[/TEX]
[TEX]\Rightarrow n_K=\frac{1,49.52,35}{39.100}=0,02[/TEX] mol
[TEX]\Rightarrow n_{Cl}=0,2 mol[/TEX]
[TEX]\Rightarrow n_K:n_{Cl}:n_O=0,02:0,02:0,06=1:1:3[/TEX]
[TEX]\Rightarrow KClO_3[/TEX]
 
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