\(m_{H_2SO_4}=\dfrac{200.9,8}{100}=19,6\left(g\right)=>n_{H_2SO_4}=\dfrac{19,6}{98}=0,2\left(mol\right)\)
PTHH: MO + H2SO4 --> MSO4 + H2O
____0,2<---0,2---------->0,2
=> \(M_{MO}=\dfrac{16}{0,2}=80\left(g/mol\right)\)
=> MM = 64 (g/mol)
=> M là Cu
\(C\%\left(CuSO_4\right)=\dfrac{0,2.160}{16+200}.100\%=14,815\%\)