Emily opted to perform a trial to ascertain if stirring impacts the speed at which an antacid dissolves. Her hypothesis posited that increasing the speed of stirring would lead to a decreased duration for the antacid to dissolve.

Question

Sample: X
Amount of water (in mL): 300
Temperature of water (in °C): 25
Rate of stirring: No stirring
Time required to dissolve in seconds: 220
Sample: Y
Amount of water (in mL): 300
Temperature of water (in °C): 25
Rate of stirring: Slow stirring
Time required to dissolve in seconds: 80
Sample: Z
Amount of water (in mL): 300
Temperature of water (in °C): 25
Rate of stirring: Fast stirring
Time required to dissolve in seconds: 45

Based on her data, what can we conclude?

Answer 1

Based on Emily's data, we can conclude that stirring does impact the speed at which an antacid dissolves. The results indicate that as the rate of stirring increases, the time required for the antacid to dissolve decreases significantly:

• No stirring (Sample X): 220 seconds
• Slow stirring (Sample Y): 80 seconds
• Fast stirring (Sample Z): 45 seconds

This trend supports Emily's hypothesis that increasing the speed of stirring decreases the time it takes for the antacid to dissolve. The data demonstrates a clear relationship between the rate of stirring and the dissolution time, suggesting that agitation helps to increase the dissolution rate of the antacid in water.

Emily's hypothesis is thus validated by her experimental results, indicating that stirring enhances the dissolution of the antacid.