I would say D. Let me know if i am wrong.
        
                    
             
        
        
        
MgH2 + 2 H2O → Mg(OH)2 + 2 H2
        
             
        
        
        
Answer:
half-life of 5,700 ± 40 years
Explanation:
 
        
                    
             
        
        
        
Answer:
0.0498 mol
Explanation:
Number of moles = concentration in mol/L × volume in L
Concentration = 1 M = 1 mol/L
Volume = 49.8 mL = 49.8/1000 = 0.0498 L
Number of moles = 1×0.0498 = 0.0498 mol
 
        
             
        
        
        
Answer:
The carrying capacity of this population would be 125 we know this because we see that this number occur multiple times and seems to be the tipping point after which the number of the population always go down