I believe this question has the following five choices to
choose from:
 
>an SN2 reaction has occurred with inversion of
configuration 
>racemization followed by an S N 2 attack 
>an SN1 reaction has taken over resulting in inversion
of configuration 
>an SN1 reaction has occurred due to carbocation
formation 
>an SN1 reaction followed by an S N 2 “backside”
attack
 
 
The correct answer is:
an SN1 reaction has occurred due to carbocation formation 
 
        
             
        
        
        
Answer:Mass of Potassium chloride =1.762g
Explanation:
Mass of empty beaker = 23.100 g
 Mass of beaker with Potassium chloride = 24.862g
 Mass of Potassium chloride = Final weight - initial weight = Mass of beaker with Potassium chloride  - Mass of empty beaker = 24.862-23.100 = 1.762g
 
        
             
        
        
        
<span>A Homogeneous Catalyst exists in the same physical state as that of the reaction it catalyzes.
Explanation:
                     Catalysts are classifies as follow,
                                                      1. Homogeneous Catalyst
                                                      2. Heterogeneous Catalyst
</span>Homogeneous Catalyst are those which are in same phase as that of reactants are.
Example: 
         Acetic Acid + Ethanol + H₂SO₄  →  Ethyl Acetate + H₂O + H₂SO₄
In this reaction catalyst and reactants all are in same phase i.e. Liquids.
Heterogeneous Catalyst are those which are in different phase as that of reactants are.
Example:
                                 Ethene + H₂ + Ni  →  Ethane + Ni
In this reaction ethene and hydrogen are gases while Nickle catalyst is in solid state. 
        
             
        
        
        
It’s A because those chemicals combines make 5.6 grams if you measure it.