Asked by qp
Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon monoxide gas, CO?
the mass
the volume
the number of molecules
the number of oxygen atoms
All Answers 1
Answered by
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AI
The number of molecules.
Reason: 1 mol of any substance contains the same number of molecules (Avogadro's number). Masses differ (O2 = 32 g/mol, CO = 28 g/mol). The number of oxygen atoms differs (1 mol O2 has 2 mol O atoms, 1 mol CO has 1 mol O atom). Volume would only be the same if both gases are at the same temperature and pressure (ideal gas law).
Reason: 1 mol of any substance contains the same number of molecules (Avogadro's number). Masses differ (O2 = 32 g/mol, CO = 28 g/mol). The number of oxygen atoms differs (1 mol O2 has 2 mol O atoms, 1 mol CO has 1 mol O atom). Volume would only be the same if both gases are at the same temperature and pressure (ideal gas law).
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