According to the law of conservation of Mass:
In a chemical reaction mass can neither be created nor be destroyed
So, we can say that: Mass of A + Mass of B = Mass of C
In the given reaction, 
One of the reactants weigh 5 grams and another one weighs x grams
The mass of the product of this reaction is 9 grams
<u>Mass of reactant B:</u>
Mass of A + Mass of B = Mass of C
5 + x = 9 
x = 4 grams
 
        
             
        
        
        
Hydrogen  H weight: 81
Non-metal
Hydrogen is the simplest element; an atom consists of only one proton and one electron. It is also the most plentiful element in the universe. Despite its simplicity and abundance, hydrogen doesn't occur naturally as a gas on the Earth--it is always combined with other elements.
period 1 group 1
Hydrogen is easily the most abundant element in the universe. It is found in the sun and most of the stars, and the planet Jupiter is composed mostly of hydrogen. On Earth, hydrogen is found in the greatest quantities as water.
 
        
                    
             
        
        
        
Explanation:
The reaction equation will be as follows.
            
Calculate the amount of 
 dissolved as follows.
              
It is given that 
 = 0.032 M/atm and 
 = 
 atm.
Hence, 
 will be calculated as follows.
            
 = 
          
                            = 
                            = 
or,                        = 
It is given that 
As,      ![K_{a} = \frac{[H^{+}]^{2}}{[CO_{2}]}](https://tex.z-dn.net/?f=K_%7Ba%7D%20%3D%20%5Cfrac%7B%5BH%5E%7B%2B%7D%5D%5E%7B2%7D%7D%7B%5BCO_%7B2%7D%5D%7D)
           
   
                
 = 
                       
 = 
Since, we know that pH = ![-log [H^{+}]](https://tex.z-dn.net/?f=-log%20%5BH%5E%7B%2B%7D%5D)
So,                      pH = 
                                  = 5.7
Therefore, we can conclude that pH of water in equilibrium with the atmosphere is 5.7.
 
        
             
        
        
        
Answer:
Explanation:
C. energy being transferred from wind
Waves are most commonly caused by wind. Wind-driven waves, or surface waves, are created by the friction between wind and surface water. As wind blows across the surface of the ocean or a lake, the continual disturbance creates a wave crest.  The gravitational pull of the sun and moon on the earth also causes waves.
 
        
             
        
        
        
the anwser would most likely be  j=0