Write the chemical formulae of the following:
Quick lime, slaked lime, milk of lime, lime water.

Explanation

To answer the question regarding the chemical formulae of quick lime, slaked lime, milk of lime, and lime water, we can follow these steps:

### Step 1: Identify Quick Lime
Quick lime is commonly known as calcium oxide.
- **Chemical Formula**: CaO

### Step 2: Identify Slaked Lime
Slaked lime is known as calcium hydroxide, which is formed when quick lime reacts with water.
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