Question

Answer 1

Cây 4:

\(a.2HCl+Fe\rightarrow FeCl_2+H_2\\ b.4Al+3O_2\rightarrow Al_2O_3\\ c.Na_2O+H_2O\rightarrow2NaOH\)

\(d.Fe_2O_3+3CO\rightarrow2Fe+3CO_2\)

Answer 2

Câu 1:

\(a.Al_2O_3\\ b.H_2O\\ c.NO_2\\ d.FeO\)

Answer 3

Câu 2:

\(a.M_{HCl}=36,5\left(\dfrac{g}{mol}\right)\\ b.M_{NO_2}=46\left(\dfrac{g}{mol}\right)\\ c.M_{Na_2O}=62\left(\dfrac{g}{mol}\right)\\ d.M_{Fe_2O_3}=160\left(\dfrac{g}{mol}\right)\)