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How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen?


A.) 1 mol of oxygen has fewer molecules.

B.) 1 mol of oxygen has more molecules.

C.) Each sample has the same number of molecules.

D.) The molecules cannot be compared without knowing the mass.

Verified Answer :

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The answer is C.) Each sample has the same number of molecules.

Answer: C.) Each sample has the same number of molecules.

Explanation: According to Avogadro's law, 1 mole of every substance contains Avogadro's number \((6.023\times 10^{23})\)of particles.

1 mole of molecule contains Avogadro's number \((6.023\times 10^{23})\)of molecules.

1 mole of oxygen molecule \((O_2)\) contains \((6.023\times 10^{23})\) number of oxygen molecules.

1 mole of nitrogen molecule \((N_2)\) contains \((6.023\times 10^{23})\) number of nitrogen molecules.

Thus both samples contain equal number of molecules.


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