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Sagot :
The problem with this experimental design is that there are two variables in each trial.
In every experiment, there must be a dependent and an independent variable. The dependent variable is altered as the independent variable changes in each trial.
In an experiment, a variable is held constant while the other is changed to see the effect of changes in one variable on another variable. We can see that in each trial, both the surface area and concentration of the reactants are altered simultaneously making it impossible to obtain accurate results about the rate of reaction.
Learn more: https://brainly.com/question/17638582
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