Most dirt on your body is nonpolar, and is trapped in oil residue on your skin. What type of liquid is oil? (polar or nonpolar) show your calculations.
You don't really need calculations to answer this. A discussion of the role of soap/detergents in dissolving (nonpolar) oil in (polar) water can be found at
http://www.elmhurst.edu/~chm/vchembook/554soap.html
To determine the polarity of oil, we can examine the molecular structure of various types of oil and consider their chemical properties. However, since there are numerous types of oil, each with its own specific composition, it is challenging to provide a definite answer without specifying a particular type of oil. Therefore, I will explain how to determine the polarity of a liquid based on its molecular structure.
To determine the polarity of a substance, we need to consider the electronegativity difference between the atoms in the molecule. Electronegativity is a measure of an atom's ability to attract electrons towards itself in a chemical bond.
If the electronegativity difference between the atoms is significant, it means there will be a polar bond, and the molecule is more likely to be polar. If the electronegativity difference is small or negligible, the molecule is considered nonpolar.
However, since oil is a complex mixture of various hydrocarbon compounds, we cannot accurately calculate its polarity without knowing the specific composition. Different types of oil may contain different atoms, such as carbon, hydrogen, oxygen, nitrogen, sulfur, etc., and the presence of these additional atoms can influence the molecule's overall polarity.
Therefore, without specifying a particular type of oil, it is not possible to perform precise calculations to determine its polarity.