Question

Bill needs to balance an equation that involves aluminium oxide (formula Al2O3). He needs a total of 12 oxygen atoms to balance his equation. What should he write? 12 Al2O3, 4 Al2O3 or Al6O12?

Answer 1

Answer:

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Answer 2

Answer:

Formula of Aluminium Oxide:

Al₂O₃

If you need 12 atoms of oxygen, then write:

4Al₂O₃

2) Sulphuric acid is a compound, not mixture because:-

(a) Its appearance is different from hydrogen and sulphur.

(b) Two or more elements are chemically combined to form sulphuric acid.

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