Question

Что должно стоять вместо знака вопроса? 4Al + ? = 2 Al2O3

Answer 1

Уравнение предложенной реакции:
4Al+3O2=2Al2O3

Answer 2

Answer:

The chemical equation provided is: 4Al + ? = 2Al2O3.

To balance this chemical equation, we can see that 4 atoms of aluminum (Al) on the left side need to react to form 2 molecules of aluminum oxide (Al2O3) on the right side. Therefore, the missing component that needs to be added to the left side of the equation is 3O2.

So, the balanced chemical equation is: 4Al + 3O2 = 2Al2O3.

This balanced equation ensures that the same number of atoms of each element is present on both sides of the equation, satisfying the law of conservation of mass.