Fuel Cells By Vincent Iacono Copyright 2009
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My experiment contains all the necessary variables. The independent variable is something that the experimenter changes by himself. For my experiment, it will be the fuel type that will be used in the fuel cell. They will all be variants of water; I will have tap water, distilled water, salty water, soap water, and vinegar water. The dependant variable is something that changes due to the independent variable, in my experiment; it will be the number of volts that is produced from the fuel cell. The control is the variable that stays the same. In my experiment, control will be the fuel cell itself, which I never alter, except for the fuel which is my independent variable and the temperature of both the fuel cell and the fuel, which will always be room temperature.
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