A helium filled weather balloon has a volume of 3.0 m3 at lift off where the air pressure is 1 atm and the temperature is 20oC.  When airborne the temperature is -60oC and its volume expands to 120 m3.  What is the pressure at the airborne location? 0.0058 atm 0.0083 atm 0.018 atm 0.034 atm

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Diatomic Gas

Molecule, is a collection of two or more atoms together (which constitute the smallest observable unit) into a pure material. There are some ways to represent the structure of a molecule. Factor symbols represent atoms in Lewis structures, and dots represent electrons that accompany them. A pair of mutual electrons (covalent bond) may be represented by a single dash. The ball-and-stick model depicts the spatial structure of the atoms better.