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Table 2.

Record pH and mass of chalk (g).

Solution no.Initial Solution pHInitial Chalk MassChalk Mass (5 min/pH sol.)Chalk Mass (10 min/pH sol.)Chalk Mass (15 min/pH sol.)Chalk Mass (20 min/pH sol.)
1. Lemon juice           
2. Soda water           
3. Water           
Solution no.Initial Solution pHInitial Chalk MassChalk Mass (5 min/pH sol.)Chalk Mass (10 min/pH sol.)Chalk Mass (15 min/pH sol.)Chalk Mass (20 min/pH sol.)
1. Lemon juice           
2. Soda water           
3. Water           
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