Write the chemical formulae of the following chemical compounds.
Plaster of Paris and Slaked lime.

Explanation

To solve the question, we need to write the chemical formulae for two compounds: Plaster of Paris and Slaked Lime. Let's break it down step by step.

### Step 1: Identify the Chemical Formula for Plaster of Paris
Plaster of Paris is a compound that is derived from gypsum. The chemical formula for Plaster of Paris is:

\[ \text{CaSO}_4 \cdot 2\text{H}_2\text{O} \]

This indicates that it consists of calcium sulfate (CaSO₄) combined with two molecules of water (H₂O).
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