How many sawhorse projections of ethane are possible ?

Explanation

To determine how many sawhorse projections of ethane (C2H6) are possible, we can follow these steps:

### Step 1: Understand the Structure of Ethane
Ethane is a simple alkane with the molecular formula C2H6. It consists of two carbon atoms connected by a single bond, with three hydrogen atoms attached to each carbon atom.

### Step 2: Define Sawhorse Projection
A sawhorse projection is a way to represent the three-dimensional arrangement of atoms in a molecule in two dimensions. In this projection, the carbon-carbon bond is depicted at an angle, allowing us to visualize the spatial arrangement of the hydrogen atoms around the carbon atoms.

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