about 500 hundred
nobody can answer that question properly.
Does not exist.
Sodium oxide is a chemical compound with the formula Na2O. It is used in ceramics and glasses.- From the WikipediaYes Na2O does exist.
Formula: ArF3 But this compound does not exist
Formula: Se3S6
Formula 1 racing will exist as long as the International Automobile Federation can turn a profit with the series. Since it is now very profitable, expect Formula 1 racing to exist for many years.
Such a compound does not exist.
Does not exist, fail.
Doesn't exist
There can be no such formula in general. A formula will exist if the area is a regular polygon (or a circle).
This is a very complex process; a chemical formula doesn't exist.
This formula may be I7Cl but I suppose that this compound doesn't exist.