If you were standing 10 yards away from a person and he simultaneously opened two containers with hydrogen sulfide (rotten egg odor) and dinitrogen oxide (laughing gas), which would you detect first and why

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).

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

Determine the  wavelength of light emitted when an electron  in an li2+ ion  makes a transition from an orbital with n  =  6 to an orbital with n  = 5.