Recitations CHEM ORGANIC CH|ALL YOU NEED

First, imagine a box full of two types of non-interacting gases such as helium (He) and neon (Ne) in equal amounts. 1. Draw a picture of how you would imagine they would be distributed in a box. They would be on opposite sides of the box as far away as possible 2. Based on what you know about entropy, can you justify why this would be the state that you observe? In your study of biology, you've probably encountered "hydrophobic interactions": some nonpolar molecules, or nonpolar parts of molecules, seem to be repelled by water. This phenomena plays an important role in the structure of proteins, and next week we'll see how it relates to the formation of lipid bilayers: the membranes that form the boundary of all cells (as well as some organelles within cells). You've also encountered hydrophobic interactions in everyday life when you've observed that oil doesn't mix with water; they separate when you try to put them together. Today you'll use the Second Law of Thermodynamics to understand where this interaction comes from. 3. Draw (in a way that makes sense to you) what it would look like at the molecular level (a) for oil and water to mix, and (b) for oil and water to separate (don't worry about correctly representing the molecular structure of the oil, you can just us