Emprical formula: Write the emprical formulas for the follwing molecule compounds: (i) dinitrogen tetoxide `(N_(2) O_(4))`, (ii) acterylene `(C_(2) H_(12) O_(6))`.
Strategy: Divide all the subscipts, if possible by a sutiable number so that the subscips are convered to the smllest whole numbers.

Explanation

(i) Dividing the subsrips by 2 gives the emprical formula `NO_(2)`,
(ii) Dividing the the suscrips by 2 gives the emprical fromula `CH`.
(iii) As there is no number by which both the subscrips 2 and are divisible, the empirical formula for indine pentoxide the same as molecular formula.
(iv) Dividing the subscrips by 6 gives the emprical formula `CH_(2) O`