An unmanned deep-sea explorer vehicle uses a magnesium-based fuel cell. The vehicle requires an average of 4.75 kJ4.75\text{ kJ}4.75 kJ of energy to travel 1 m1\text{ m}1 m through water. The magnesium reaction inside the fuel cell yields an energy content of 380 kJ/mol380\text{ kJ/mol}380 kJ/mol. Calculate the number of moles of magnesium required by the vehicle to complete a survey mission of 32 km32\text{ km}32 km.