Question

Which of the following sets of coefficients correctly balances the following chemical equation?
Al(OH)3 Al2O3 + H2O

2; 1; 3
2; 2; 3
3; 1; 2
2; 1; 2

Answer 1

To balance a chemical reaction, the number (and type) of elements needs to be the same in the reactants and products.

Answer 2

For example, the number of Al is not balanced because we have 1 in the reactants and 2 in the products.

Answer 3

Any ideas how to balance that?

Answer 4

No, I don't get how to balance chemical equations, my teacher went to fast

Answer 5

Ok, let me show you the way I like to do them.