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- add the mango juice to the fermentation tube
- add the yeast solution to the fermentation tube
- add distilled water + yeast solution, grape juice + yeast solution, and grapefruit juice + yeast solution to the remaining three fermentation tubes.
- place the four fermentation tubes in a water bath, add warm water and observe what happens in the foot fermentation tube.
- observe the reaction between the juice and the yeast
- the water level in the blind tube has lowered by the volume of carbon dioxide produced by the yeast
- use an eyedropper to remove some of the grape juice and yeast mixture from the fermentation tube containing the grape juice and yeast.
- add potassium hydroxide solution to the grape juice and yeast mixture and observe what happens
<Results Determine the change in gas volume in the blind tube over time.
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