Calculate the amount of potassium chlorate `(KClO_(3))` which must be heated to produce `2.4` litres of oxygen at `740 mm` Hg and at `25^(@)C`.

Explanation

To calculate the amount of potassium chlorate (KClO₃) that must be heated to produce 2.4 liters of oxygen (O₂) at a pressure of 740 mm Hg and a temperature of 25°C, we can follow these steps:

### Step 1: Write the balanced chemical equation
The decomposition of potassium chlorate can be represented by the following balanced equation:
\[ 2 \text{KClO}_3 \rightarrow 2 \text{KCl} + 3 \text{O}_2 \]
From the equation, we see that 2 moles of KClO₃ produce 3 moles of O₂.
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