Study Barn - At STP, 32.0 liters of O2 contain the same number of molecules as:

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At STP, 32.0 liters of O₂ contain the same number of molecules as:

A. 22.4 L Ar

B. 28.0 L of N₂

C. 32. 0 L of H₂

D. 36.8 L of He

E. 44.8 L of He₂

At the same temperature and pressure, equal volumes of gases have an equal (the same) number of molecules. This is known as Avogadro' hypothesis.

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Added: 8/12/2008

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