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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.

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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 [tex](6.023\times 10^{23})[/tex]of particles.

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

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

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

Thus both samples contain equal number of molecules.


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