Well, the sugar is dissolving in the water as you mix it which is a physical change.
        
             
        
        
        
Answer:
A. 1350
You multiply 18.21HNO3* 1mol MgN2O6 * 148.30MgN2O6
Then divide it by the 2mol HNO3 to get 1350
 
        
             
        
        
        
Answer:
110 degree
Explanation:
This is because Hybridization of an s orbital with all three p orbitals (px , py, and pz) results in four sp3 hybrid orbitals. sp3 hybrid orbitals are oriented at bond angle of 109.5 degrees from each other. This 109.5 degrees gives an arrangement of tetrahedral geometry
 
        
             
        
        
        
The answer is Fe3O2 because there’s 2 oxygen and 3 iron
        
             
        
        
        
I think it is <span>Symbiosis. But I dont know how to explain it</span>