To convert m-ethylaniline to m-ethylfluorobenzene, it should be treated with nitrous acid followed by .

Explanation:

In this reaction, we must exchange the amino group () for a fluorine atom (). Also, the first step in this reaction is the addition of nitrous acid.

We must remember that the amino group in the presence of nitrous acid produces a diazonium salt. The group is a very good leaving group and many benzene derivatives can be produced from this intermediate (see figure 1).

If what we want is to bond a fluorine atom we must use to be able to produce m-ethylfluorobenzene (see figure 2).

I hope it helps!

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later

Talc (french chalk) is the ingredient