room with dimensions 9.00 mm by 7.00 mm by 2.50 mm is filled with pure oxygen at 27.0 ∘C∘C and 1.00 atm . The molar mass of oxygen is 32 g/mol. Part A How many moles of oxygen are required? Express your answer in moles. Part B What is the mass of this oxygen, in kilograms? Express your answer in kilograms.

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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.