Question

2 In which of the following substances will there be :
(a) increase in mass (b) decrease in mass
(c) no change in mass when they are exposed to air ?
1. Sodium chloride 2. Iron
3. Conc. sulphuric acid 4. Table salt
5. Sodium carbonate crystals​

Answer 1

Answer:

1. no change

2. inc in mass

3. no change

4. inc in mass

5. decrease in mass

Explanation:

Answer 2

Answer:

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