- Volume of the rock, \( V = 0.2 \, \text{m}^3 \).
- Density of alcohol, \( \rho = 0.8 \, \text{g/cm}^3 \).
- Convert the density of alcohol to \(\text{kg/m}^3\) since the SI unit of density is \(\text{kg/m}^3\).
\[ 0.8 \, \text{g/cm}^3 = 0.8 \times 1000
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