Answer:
If enough thermal energy is added to a liquid lets say cold it will freeze turning it into a solid. they same for a solid if enough thermal energy is added it can turn to a liquid or a gas.
Explanation: Its science.
 
        
                    
             
        
        
        
Its a change in state of solid to liquid
the reason is that in a solid state the molecules have little  kinetic energy to move and so they have restricted movement and so it remains solid
once heat is applied the molecules gain enough energy to move and so they turn into a liquid and move according to the laws of physics
hope that helps 
        
                    
             
        
        
        
First we convert kg to g
1kg =1000g
4.70=x(gram)
4.70×1000÷1=4700g
now:
number of moles=mass÷molarmass
number of moles=4700÷65.4
number of moles=71.86moles.
        
                    
             
        
        
        
Answer:
2
Explanation:
The total number of atoms in silver sulfate Ag2SO4 is 2
 
        
             
        
        
        
Answer:
I think it is three times I'm not sure