A helium balloon has a volume of 2.30 L at 23.5 oC and a pressure of 1.00 atm at sea level. The Balloon is released and floats upward. At a certain height the atmospheric pressure is 0.810 atm and the temperature is 12.0 oC. Calculate the volume of the balloon.

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

Carbon based or cells?