For a certain substitution reaction, the rate of substitution is found to be independent of both the concentration and the nature of the nucleophile. what is the most likely mechanism?

Thank you for posting your question here at . Below are the choices that should accompanied with the question above. 

A)Sn1 
B)Sn2 
C)both Sn1 and Sn2 are likely 
D)neither Sn1 nor Sn2 can account for the observations

The most likely mechanism for the situation above is letter A. I hope the answer helps.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.

Answerapplying a direct current to a non magnetic material in order to create a electromagnetic field; plz check first good luck;