Table 4. Calculated coverages of limonene on SiO₂ for different pressures using volumetric measurements.

Equilibrium pressure (mTorr)	Coverage (×1013 molecules/cm2)
6	2.4 ± 0.1
7	2.4 ± 0.1
8	2.7 ± 0.1
9	3.1 ± 0.2
10	3.2 ± 0.2
12	3.9 ± 0.2
13	4.1 ± 0.2
14	4.4 ± 0.2
16	4.3 ± 0.2
18	4.8 ± 0.2
21	5.7 ± 0.3
22	5.7 ± 0.3
23	5.8 ± 0.3
28	6.5 ± 0.3