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.

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

Explanation: According to Avogadro's law, 1 mole of every substance contains Avogadro's number of particles.

1 mole of molecule contains Avogadro's number of molecules.

1 mole of oxygen molecule contains number of oxygen molecules.

1 mole of nitrogen molecule contains number of nitrogen molecules.

Thus both samples contain equal number of molecules.

b is the correct answer

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