30kg think of it like this imagine you are moving to your college dorm would you have you carry the box if weights or will you carry your books instead
        
             
        
        
        
I can’t answer you but here have a meme
        
             
        
        
        
Answer:
Yes they are found in same period
 
        
                    
             
        
        
        
 adhesion refers to the tendency of unlike molecules to bond with one another
 
        
             
        
        
        
Its a chemical element with symble