Divers use a "trimix" gas consisting of oxygen, nitrogen, and this element. Below the lambda point, it has no viscosity and is called a superfluid. Alpha particles are the nuc
Divers use a "trimix" gas consisting of oxygen, nitrogen, and this element. Below the lambda point, it has no viscosity and is called a superfluid. Alpha particles are the nuclei of the most common isotope of this element, which is the (*) second most abundant in the universe. Because sound travels faster in this element than in air, inhaling it results in a high-pitched voice. For 10 points, name this lightest noble gas, whose symbol is He [H-E, not "he"].
Divers use a "trimix" gas consisting of oxygen, nitrogen, and this element.