Explanation:
The use of microorganism in our day to day life is making medicine.
 
        
             
        
        
        
If your equation is <span>Cu+NO^- 3-->Cu^2+NO, then the answer is 
</span><span>2 Cu + 1 NO3{-}  → 1 Cu^{2+} + 3 NO 
</span>
To check if it is balance, this is the solution:
2- Cu- 2
3- N -3
3- O -3 
        
             
        
        
        
Answer:C
Explanation:
Mountain Dew soda is not a colloid 
 
        
             
        
        
        
9 g of hydrogen - 42 g of nitrogen
5 g of hydrogen - x g of nitrogen

The mass of nitrogen in the second sample is 23.33 g.