Answer:
Specific gravity is the density of asubstance divided by the density of water. Since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density(but without any units).
 
        
                    
             
        
        
        
Answer:
Coefficient of 
Coefficient of  =8
=8
Explanation:
We are given that  a reaction in which  reacts with
 reacts with 
We have to find the coefficient of each reactants in balanced reaction

Coefficient is defined the constant  value multiplied with a reactant in a reaction.
Coefficient of  =3
=3
Coefficient of 
Coefficient of 
Coefficient of 
Coefficient of 
Coefficient of KOH=2
Hence, Coefficient of  and coefficient of
 and coefficient of 
 
        
             
        
        
        
What was the question here?
        
             
        
        
        
Answer:
Explanation:
Sodium mass number 23, 11 electrons
Magnesium: neutrons = 12
aluminum : atomic number  = 13
phosporus : protons = 15