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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!.
Quick Answer. Calcium hydroxide has a molar mass of 74 grams per mole. This can be determined by looking at its molecular formula of Ca(OH)2 and adding together the atomic weights of each individual atom. The atomic weights of the individual atoms are found on the periodic table.