A sample of common salt obtaied from sea water contain 39 g of NaCl and 1 g KCl. If it is dissolved in 100 g of water and then 90 g water is evaporated, what observation do you find at `0^(@)C`? What is the maximum amount of pure NaCl that can be obtained by the above method ? (Solubilities of NaCl and KCl are 40 g, 55 g at `100^(@)C` and 35 g 28 g at `0^(@)C` respectivety)

Explanation

To solve the problem step by step, we will analyze the given information and apply the principles of solubility.

### Step 1: Understand the Initial Conditions
We have a sample containing:
- 39 g of NaCl
- 1 g of KCl

This sample is dissolved in 100 g of water.
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