Find the maximum number of possible chiral carbons in:
`H_(2)C=CH-underset(C_(2)H_(5))underset(|)(C)H-overset(Cl)overset(|)(C)H-underset(C_(2)H_(5))underset(|)(C)H-CH=CH_(2)`.

Answer

To find the maximum number of possible chiral carbons in the given compound, we need to follow these steps:

### Step 1: Draw the Structure
First, we need to draw the structure of the compound based on the provided formula. The compound is:
```
H2C=CH-C(C2H5)(Cl)-C(C2H5)(H)-CH=CH2
```
This can be visualized as having a double bond between the first two carbon atoms and branching at the third carbon.

### Step 2: Identify the Carbon Atoms
Next, we label all the carbon atoms in the structure:
1. C1: H2C (double bond)
2. C2: CH (double bond)
3. C3: C with Cl and C2H5 groups
4. C4: C with two C2H5 groups
5. C5: CH (single bond)
6. C6: CH2 (double bond)

### Step 3: Determine Chiral Centers
A chiral carbon atom must have four different substituents. We will analyze each carbon atom:

- **C1**: Has 2 hydrogens and is part of a double bond. Not chiral.
- **C2**: Has 1 hydrogen, 1 carbon from the double bond, and is also part of a double bond. Not chiral.
- **C3**: Has 1 Cl, 1 hydrogen, 1 C2H5, and 1 C4 (which is different). This carbon has four different substituents. **Chiral.**
- **C4**: Has 2 C2H5 groups and 1 hydrogen. Not chiral (two identical substituents).
- **C5**: Has 1 hydrogen, 1 C2H5, and is connected to C6. Not chiral (two identical substituents).
- **C6**: Has 2 hydrogens and is part of a double bond. Not chiral.

### Step 4: Count the Chiral Carbons
From our analysis, we find that only C3 is chiral. Therefore, the total number of chiral carbons in the compound is **1**.

### Final Answer
The maximum number of possible chiral carbons in the given compound is **1**.

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