Chemical formula for ammonium fluoride

If you want to create an electrical current, which situation would produce a solution capable of this

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

How many molecules are in 6.0 moles of methane