Question

Write the molecular formula, expanded structural formula, and condensed formula of the following hydrocarbons.

1. Heptane
2. 3-Hexene
3. 2-Butyne
4. Decyne
5. Propene

Answer 1

Certainly! Here are the molecular formulas, expanded structural formulas, and condensed formulas for the requested hydrocarbons:

### 1. Heptane
- **Molecular Formula:** C₇H₁₆
- **Expanded Structural Formula:**

```
H H H H H H H
| | | | | | |
H—C—C—C—C—C—C—C—H
| | | | | | |
H H H H H H H
```

- **Condensed Formula:** CH₃(CH₂)₅CH₃

### 2. 3-Hexene
- **Molecular Formula:** C₆H₁₂
- **Expanded Structural Formula:**

```
H H H H H
| | | | |
H—C—C—C=C—C—C—H
| | | | |
H H H H H
```

- **Condensed Formula:** CH₃CH₂CH=CHCH₂CH₃

### 3. 2-Butyne
- **Molecular Formula:** C₄H₆
- **Expanded Structural Formula:**

```
H H
| |
H—C≡C—C—H
|
H
```

- **Condensed Formula:** CH₃C≡CCH₃

### 4. Decyne
- **Molecular Formula:** C₁₀H₈
- **Expanded Structural Formula:**

```
H H H H H H H H H H
| | | | | | | | | |
H—C≡C—C—C—C—C—C—C—C—C—H
| | | | | | | |
H H H H H H H H
```

- **Condensed Formula:** CH₃C≡CCCCCCCH₃

### 5. Propene
- **Molecular Formula:** C₃H₆
- **Expanded Structural Formula:**

```
H H
| |
H—C—C=C—H
| |
H H
```

- **Condensed Formula:** CH₂=CHCH₃

Let me know if you need further information on these compounds!