Answer:
[tex]N_{2}O_{5}[/tex]
Explanation:
usually, the first step is to calculate the moles but since that is already given in the question we can move onto the next step
least molar ratio:
N = [tex]\frac{1}{1}[/tex] = 1
O = [tex]\frac{2.5}{1}[/tex] = 2.5
when the answer is in decimals we will multiply it by an integer in order to make it a whole number (in this case 2)
O = 2.5(2) = 5
in order to balance, we will also multiply the atoms of N by the same integer
N = 1(2) = 2
thus, the empirical formula is [tex]N_{2}O_{5}[/tex]
