Ummm I just need to answer questions sorry!!!
Answer:
See attached picture for both electrophillic substitution in pyrole and in pyridine.
Explanation:
i think the greater the electric charge the atom decreases in size
Answer : The volume of 3.0 M spinach solution added should be, 50 mL
Explanation :
Formula used :

where,
are the initial molarity and volume of spinach solution.
are the final molarity and volume of diluted spinach solution.
We are given:

Now put all the given values in above equation, we get:

Hence, the volume of 3.0 M spinach solution added should be, 50 mL
The answer to your question is 40° because freezing temp for a liquid is 32°