Question

[Lê Minh Như]

 cứu;-;

Answer 1

[Hà Thanh Hằng]

câu 9:
\(2Al+3H2SO4\rarr Al2\left(SO4\right)3+3H2\)
\(Mg\left(OH\right)2+2HCl\rarr MgCl2+2H2O\)
\(Ca\left(OH\right)2+H2SO4\rarr CaSO4+2H2O\)
\(Fe+2HCl\rarr FeCl2+H2\)