I would say D. Let me know if i am wrong.
Answer: Motion, providing a burst of power that can move a specific part of the device.
Explanation: Hope this helps
Answer:
2 FeCl3 → 2 Fe + 3 Cl2
Explanation:
2 Fe and 6 Cl on the reactants side, and 2 Fe and 6 Cl on the products side.