0.8 moles
 3 moles of feO  gives you  2 moles of Al and 1.2 of your moles should give you 1.2 divided by 3*2 so it equals 0.80 moles 
Right?
 
        
        
        
Answer:
tundra bc it has barley any food source and has vary little inhabitants
Explanation:
 
        
             
        
        
        
10.92N
Force = mass x acceleration 
4.2kg x 1.6m/s^2 = 10.92N