The mechanical energy becomes chemical energy an infinite number of times. The correct option is C.
What is mechanical energy?
Mechanical energy is the energy that can be kinetic or potential. It is the energy that is possessed by an object when it is doing any work or is in motion. For example, if a box is held vertically, it contains mechanical energy that is released when it is released.
Chemical energy is the energy that is stored in the bonds of atoms and molecules. The energy is released when any reaction happens, the bonds release energy.
The mechanical energy can change into chemical energy for an infinite time because during every reaction, the energy is used and chemical energy is either formed or released.
Thus, the correct option is C. an infinite number of times.
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