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Q: How many atoms are in 2AL2O3?

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Well Al2O3 has 2 atoms of aluminum (Al2) and 3 atoms of Oxygen (O3). Thus, as there are 2Al2O3 molecules there are 4 atoms of aluminum.

By looking at the formula Al2O3 you find that there are 3 oxygen atoms in each formula unit. 2Al2O3 is 2 formula units.So you have six oxygen atoms

In 2Al2O3 there would be 6 oxygen atoms.

he following equation is balanced 4Al 3O2 -- 2Al2O3 is not a balanced equation.on the reactants side we haev 4 atoms of Al and we have 24 atoms of oxygen. but on products side we have 24Al but 6 atoms of oxygen.this violates conservation of mass.

It's Aluminum Oxide.

4Al + 3O2 ---> 2Al2O3

exothermic

Combination Reaction.

4Al + 302 ==> 2Al2O3 ----

4Al+3O2--->2Al2O3

4Al + 3O2 --> 2Al2O3

4Al+3O2---->2Al2O3

4Al + 3O2 --> 2Al2O3

4Al + 3O2 --------> 2Al2O3

2Al2O3 --> 4Al + 3O2

4Al + 3O2 -> 2Al2O3

4 Al + 3O2 = 2Al2O3

Exothermic

4 Al + 3O2 ------> 2Al2O3 so 4 moles of Aluminium react with 6 moles of oxygen atoms or 3 moles of oxygen molecules. So 5 moles of Al reacts with 5/4 x 6 = 7.5 moles of oxygen atoms or 3.75 moles of oxygen molecules.

Because the numbers of aluminum and oxygen atoms are not the same on both sides of the equation, so the equation is not balanced. In order to be balanced, the numbers of atoms of each element must be the same on both sides of the equation. The correct equation is 4Al + 3O2 --> 2Al2O3. This gives 4 aluminum atoms and 6 oxygen atoms on both sides of the equation, so it is balanced.

4Al+3O2-->2Al2O3

4Al + 3O2 --> 2Al2O3

It means that there are two molecules of Aluminum Oxide, Al2O3.

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