How many grams of KCl should be added to 1 kg of water to lower its freezing point to `- 8.0 ^(@)C `? (`K_(f) = 1.86` K kg/mol)

Explanation

To solve the problem of how many grams of KCl should be added to 1 kg of water to lower its freezing point to -8.0 °C, we will follow these steps:

### Step 1: Understand the freezing point depression formula
The freezing point depression can be calculated using the formula:
\[ \Delta T_f = i \cdot K_f \cdot m \]
where:
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