Ahydrocarbon with this formula c2h6: a) is an alkane b) is an alkene c) is an alkyne d) indeterminate

General formula of alkane is C(n)H(2n+2).
General formula of alkene is C(n)H(2n).
General formula of alkyne is C(n)H(2n-2).
So, C2H6 = C(2)H(2*2+6) =C(2)H(8)

A. C2H6 is an alkane.

The correct name for n3-ion should be azide.

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