A sample of peppermint essential oil contains four terpene-derived compounds, W, X, Y, and Z, which are analyzed by gas chromatography and mass spectrometry. The results are summarized in the table below:
| Compound | Retention time / minutes | Relative peak area (relative molar proportion) | m/zm/zm/z of molecular ion peak |
|---|---|---|---|
| W | 3.4 | 1.6 | 136 |
| X | 5.1 | 3.2 | 154 |
| Y | 6.8 | 4.8 | 196 |
| Z | 7.3 | 2.5 | 154 |
The concentration of compound X in the essential oil is 8.47×10−2 g dm−38.47 \times 10^{-2}\text{ g dm}^{-3}8.47×10−2 g dm−3.
Using the results, calculate the concentration, in mol dm−3\text{mol dm}^{-3}mol dm−3, of compound Y in the essential oil.
Give your answer to two significant figures.