Answer:
2.34 gms left
Explanation:
3 weeks = 21 days   =    7 half lives 
300 * (1/2)^7 = 2.34 gms
 
        
             
        
        
        
The two parts of a solution are a Solute and the other one is a Solvent. The Solute is the substance that dissolves, and the Solvent is the majority of the solution.
        
             
        
        
        
Answer:
Nature versus nurture is a long-standing debate in biology about the balance between two competing factors which determine fate: environment and genetics. The alliterative expression "nature and nurture"