Question

N(Al)=4моль +O2 n(Al2O3)-?

Answer 1

Держи...............................

Answer 2

The balanced chemical equation for the reaction between aluminum (Al) and oxygen (O2) to form aluminum oxide (Al2O3) is:

4 Al + 3 O2 -> 2 Al2O3

This equation tells us that 4 moles of aluminum react with 3 moles of oxygen to produce 2 moles of aluminum oxide.

If you start with 4 moles of aluminum, you would need 3 moles of oxygen to react completely. If you have an excess of oxygen, you would use up 3 moles of oxygen for every 4 moles of aluminum reacted. The ratio between aluminum and oxygen is 4:3 in this reaction.

Therefore, if you have 4 moles of aluminum and an excess of oxygen, the reaction would produce:

4 moles Al * (2 moles Al2O3 / 4 moles Al) = 2 moles of Al2O3

So, when 4 moles of aluminum react with an excess of oxygen, you would produce 2 moles of aluminum oxide (Al2O3).