A lab technician obtains an unknown liquid through Space Exploration. They discover that when the compound breaks down, there are: 2.688g of
Hydrogen and 21.32g of Oxygen. What is the percent composition of each
element in the sample? *

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

The correct answer is "hydrogen".