Answer:
no, not all objects emit electromagnet waves.
Explanation: because lets say the object is carpet it has no magnetic waves in it so not all objects do.
 
        
             
        
        
        
Answer:
CaO + H20 => Ca(OH)2
Explanation:
quick lime ia a oxyde and when it reacts with water it gives hydroxide
 
        
                    
             
        
        
        
The answer is "night sky"
hope i helped :)
        
             
        
        
        
Glycerol attractive forces are great than water. The harder to break, the more energy is needed.