Is this true? The molar mass of nitrogen gas is 14.0 g.
Nitrogen occurs in nature as N2
Yes, it is true that the molar mass of nitrogen gas (N2) is 28.0 g/mol, not 14.0 g/mol as stated in your question.
To determine the molar mass of a compound, you need to know the atomic masses of the individual atoms that make up the compound. In the case of nitrogen gas (N2), nitrogen (N) has an atomic mass of approximately 14.0 atomic mass units (amu). Since there are two nitrogen atoms in N2, you add the atomic masses of the two nitrogen atoms together:
14.0 amu + 14.0 amu = 28.0 amu/mol
Therefore, the molar mass of nitrogen gas (N2) is 28.0 grams per mole (g/mol).