Write bond line formulae for the following :
(i) `HO (CH_2 )_3 CH CH_3 CH (CH_3 )_2`
(ii) `CH_3 underset(underset(CH_3)|) (C ) = CH CH_3 CH_3`

Explanation

To write the bond line formulae for the given compounds, we will follow these steps:

### Step 1: Analyze the first compound `HO (CH_2)_3 CH CH_3 CH (CH_3)_2`

1. **Identify the structure**: The compound consists of a hydroxyl group (OH) attached to a carbon chain. The carbon chain has three CH2 groups followed by a CH group, then a CH3 group, and a carbon with two methyl groups (CH3).

2. **Count the carbon atoms**:
- There are 6 carbon atoms in total.
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