Emily's experiment examines how the rate of stirring affects the dissolution time of an antacid in water, with the hypothesis that increased stirring speeds will reduce the time required for the antacid to dissolve. Here are the samples she collected:
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Sample X:
- Amount of water: 300 mL
- Rate of stirring: none
- Time required to dissolve: 220 seconds
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Sample Y:
- Amount of water: 300 mL
- Rate of stirring: slow
- Time required to dissolve: 80 seconds
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Sample Z:
- Amount of water: 300 mL
- Rate of stirring: fast
- Time required to dissolve: 45 seconds
Analysis of Results
From Emily's results, it is clear that as the rate of stirring increased, the time required for the antacid to dissolve decreased significantly:
- No stirring (Sample X) required 220 seconds to completely dissolve.
- Slow stirring (Sample Y) resulted in a dissolution time of 80 seconds.
- Fast stirring (Sample Z) led to the shortest dissolution time of 45 seconds.
Conclusion
Emily's experiment supports her hypothesis: increased stirring speed correlates with a reduced time for the antacid to dissolve. The data indicates that with no stirring, the dissolution process is significantly slower compared to when stirring is introduced, and even faster when stirring is applied at a faster rate.
Implications
The findings underscore the importance of agitation in enhancing the dissolution rate of antacids, which can have practical applications in understanding how quickly the antacid can neutralize stomach acid. Further experiments could investigate the optimal stirring speed for maximum efficiency, as well as if other factors, like temperature or the type of antacid, influence dissolution times.