Answer
The empirical formula is CO
Explanation
The elements are Carbon and Oxygen
[tex]\begin{gathered} \text{Given elements are }C,\text{ O} \\ \text{Given respective mole: C = 0.15 mole and O = 0.148 mole} \\ \text{Divide by the smallest mole: }\frac{0.15}{0.148}\approx1\text{ }\frac{0.148}{0.148}=1 \\ Empi\text{rical Formula: CO} \end{gathered}[/tex]