Answer:
Light changes speed in a glass of water.
Explanation:
 
        
             
        
        
        
An element cannot be broken down any further. Elements can be found on the periodic table
        
                    
             
        
        
        
They should identify the confounding variable.
Some condition that is not examined by the scientist might alter the experiment result. That condition is called confounding variable. If the method of the experiment same but result is very different, there should be unidentified confounding variable. It could be air humidity, temperature, ventilation, light, time of the year or anything that might not be seen by naked eye.
Try to redo the experiment with controlling variable as much as possible.
        
             
        
        
        
Answer:
Nurses must use organic chemistry to determine how the bodies of their patients metabolized glucose, and how the body reacts to it.
 
        
             
        
        
        
Complete Question 
 The complete question is shown on the first uploaded image 
Answer:
The equilibrium constant is  
Explanation:
       From  the question we are told that
               The chemical reaction equation is 
       
The voume of the misture is   
  
   The molar mass of   is a constant with value of
 is a constant with value of  
     The molar mass of   is a constant with value of
    is a constant with value of  
     
     The molar mass of   is a constant with value of
    is a constant with value of  
Generally the number of moles  is mathematically given as 
                      
     For   
           
                                 
      For  
                
                                 
        For  
                          
                                               
Generally the concentration of a compound  is mathematicallyrepresented  as 
        
       For   
                 ![Concentration[Fe_2 O_3] = \frac{0.222125}{5.4}](https://tex.z-dn.net/?f=Concentration%5BFe_2%20O_3%5D%20%3D%20%5Cfrac%7B0.222125%7D%7B5.4%7D)
                                           
                          
        For  
                   ![Concentration[H_2] = \frac{1.815}{5.4}](https://tex.z-dn.net/?f=Concentration%5BH_2%5D%20%3D%20%5Cfrac%7B1.815%7D%7B5.4%7D)
                                            
       For  
                 ![Concentration [H_2O] = \frac{0.12}{5.4}](https://tex.z-dn.net/?f=Concentration%20%5BH_2O%5D%20%3D%20%5Cfrac%7B0.12%7D%7B5.4%7D)
                                                   
   The equilibrium constant  is mathematically represented as 
                 ![K_c = \frac{[concentration \ of \ product]}{[concentration \ of \ reactant ]}](https://tex.z-dn.net/?f=K_c%20%3D%20%5Cfrac%7B%5Bconcentration%20%5C%20of%20%5C%20product%5D%7D%7B%5Bconcentration%20%5C%20of%20%5C%20reactant%20%5D%7D)
   Considering 
             And      
 At  equilibrium the 
                     
                           