Answer
The molecular formula for the oxide is N₂O₄
Step-by-step explanation
Given that the oxide simplest formula = NO₂ and the relative molecular mass of the oxide is 92, then the molecular formula is calculated as follows;
(NO₂)n = (Relative molecular mass)
(NO₂)n = 92
Atomic masses of N = 14 and O = 16.
(14 + 2 x 16)n = 92
(14 + 32)n = 92
46n = 92
Divide both sides by 46
46n/46 = 92/46
n = 2
So, (NO₂)₂ = N₂O₄
Hence, the molecular formula for the oxide is N₂O₄