Answer:
28.43 min
Explanation:
Using integrated rate law for first order kinetics as:
![[A_t]=[A_0]e^{-kt}](https://tex.z-dn.net/?f=%5BA_t%5D%3D%5BA_0%5De%5E%7B-kt%7D) 
Where,  
![[A_t]](https://tex.z-dn.net/?f=%5BA_t%5D) is the concentration at time t
 is the concentration at time t
![[A_0]](https://tex.z-dn.net/?f=%5BA_0%5D) is the initial concentration
 is the initial concentration
Given that:
The rate constant, k =  min⁻¹
 min⁻¹
Initial concentration ![[A_0]](https://tex.z-dn.net/?f=%5BA_0%5D) = 0.1 M
 = 0.1 M
Final concentration ![[A_t]](https://tex.z-dn.net/?f=%5BA_t%5D) =
 =  M
 M
Time = ?
Applying in the above equation, we get that:-
 




 
        
             
        
        
        
The action or power of focusing one's attention or mental effort.
a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
a substance that slows down or prevents a particular chemical reaction or other process, or that reduces the activity of a particular reactant, catalyst, or enzyme.
        
                    
             
        
        
        
No. of moles = mass / molar mass
 = 100/35.5