To identify the best solvent type for each substance, we can categorize them based on their polarity:
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Skin oils - Nonpolar solvent (Skin oils are predominantly made of nonpolar molecules, so nonpolar solvents would dissolve them best).
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Natural peanut oil - Nonpolar solvent (Peanut oil is primarily made up of nonpolar triglycerides, making nonpolar solvents more effective).
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Butter - Nonpolar solvent (Butter is composed of fats, which are mainly nonpolar, making nonpolar solvents more appropriate).
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Fruit juice - Polar solvent (Fruit juice consists largely of water and includes various polar compounds, making polar solvents suitable).
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Potassium chloride, KCl - Polar solvent (KCl is an ionic compound that dissolves well in polar solvents like water due to ion-dipole interactions).
To summarize:
- Skin oils: Nonpolar solvent
- Natural peanut oil: Nonpolar solvent
- Butter: Nonpolar solvent
- Fruit juice: Polar solvent
- Potassium chloride, KCl: Polar solvent