What is the ratio by weight of NaF and NaI which when dissolved in water produces the same obtained on evaporation of the salt solution is 0.48 g per 100 mL of solution evaporataed. Assume complete dissociation of the salts.

Explanation

To find the ratio by weight of NaF and NaI that, when dissolved in water, produces the same concentration as the evaporation of a salt solution (0.48 g per 100 mL), we can follow these steps:

### Step 1: Define the Variables
Let:
- \( A \) = weight of NaF (in grams)
- \( B \) = weight of NaI (in grams)

According to the problem, we have:
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