Answer:
go to the store to buy more batteries
Explanation:
 
        
             
        
        
        
Answer:
Explanation:
The acid level has changed 
 
        
             
        
        
        
Answer:
Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others. That is your answer! Thanks! :)
Explanation:
 
        
                    
             
        
        
        
Answer:
58.32
Explanation:
The mass number is one mole and for Mg it is 24.306 for O it is 15.999 and for H it is 1.008. because O and H have 2, you multiply them by 2 and add all the numbers and it equals 58.32
 
        
                    
             
        
        
        
 Answer:
20 neutrons
Explanation:
(not really any just look at a periodic table)