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While trace impurities of iron and chromium in natural corundum form the gemstones ruby and sapphire, they are basically a binary compound of aluminum and oxygen, with 52.9% Al. Find the empirical formula and give the chemical name for corundum.

the answer is Al2O2
but i don't get it
13 years ago

Answers

DrBob222
No, it's Al2O3.
Post your work and I'll find the error.
I suspect you rounded 1 to 1.5 to 2:2 whereas 1:1.5 is 2:3. Rounding a fraction that much is not acceptable.
13 years ago

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