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Molar mass nitrogen ( N2 ) = 28.02 g/mol. 1 mol N2 -------> 28.02 g. 4.60 mol ---------> x g. x = 4.60 * 28.02. x = 129 g of N2. hope this helps!.
Atomic mass is the mass of an atom and is given in a.m.u. (atomic mass unit). However, a molar mass is the mass of one mole atoms or molecules and is given in grams. one mole is equal to Avogadro's number (#N_A=6.022xx10^23#) atoms or molecules. For example: Sodium atom has a mass of 23 a.m.u. however, the molar mass of sodium is 23g/mol.