2d.
\(2C_xH_yO_z+\left(4x+y-z\right)O_2\underrightarrow{^{^{t^0}}}2xCO_2+yH_2O\)
3.a
CTHH có dạng : \(Ba_xO_y\)
\(\%Ba=\dfrac{137x}{153}\cdot100\%=89.5425\%\)
\(\Rightarrow x=1\)
\(M=137+16y=153\left(g\text{/}mol\right)\)
\(\Rightarrow y=1\)
CT : BaO
3b
\(\%S=\dfrac{32}{80}\cdot100\%=40\%\)
\(\%O=\dfrac{48}{80}\cdot100\%=60\%\)