Answer:
Neutral atoms of each element contain an equal number of protons and electrons. The number of protons determines an element's atomic number and is used to distinguish one element from another. ... Together, the number of protons and the number of neutrons determine an element's mass number.
Explanation:
 
        
             
        
        
        
The direction<span> of </span>the momentum<span> is the </span>same<span> as the </span>direction<span> of the velocity of the ball. </span>
        
             
        
        
        
Well the formula for the volume of a cube is 
V=length×width×height
so input it
V=25×5×15
V=1875 cubic meters
        
                    
             
        
        
        
I would see chemical constitution and physical components are not changed. 
Because physical reaction won't change the component itself
        
             
        
        
        
Answer:
Aluminum chromate, a yellow precipitate.
Explanation:
