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Make 3 different antacid tablets and determine which antacid tablet is the…

- - - - Dependent variable: pH
      - Control Variable: Sample size of acid and Sample size of antacid
      - Independent Variable: Grammes
      - the pH measured after antacid fully dissolves
      - Advantages/Disadvantages
        
        Is able to observe chemical efficacy
        
        Need to wait until fully dissolved (stirring is not present in the esophagus)
  - - - Dependent variable: Time
      - Control Variable: Sample size of acid and antacid, and time given
      - Independent Variable: pH (after a certain period of time)
      - the pH measured after a certain period of time
      - Advantages/Disadvatnages
        
        More realistically simulate the needs of the recipient