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At a fixed temperature and pressure, a cylinder contains equal volumes of O2 and an unknown gas. The identity of the unknown gas CO.
The number of moles of a given substance is calculated by dividing the mass by the molar mass.
The number of moles of O₂ =
= 0.625 moles.
Based on the given assumption, at fixed temperature and pressure;
- Let assume that the number of moles of the unknown gas is = 0.625 moles
The molar mass of the unknown gas can be estimated as:
= 28 g/mol
Therefore, we can conclude that the unknown gas is CO.
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