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Answer:a)= 17 g/molb)= 146 g/molExplanation:The molecular weight of a compound is equal to the sum of the atomic weights of the constituent elements.a)Atomic weight of N = 14 g/molAtomic weight of H = 1 g/molMolecular weight =b)Atomic weight of S = 32 g/molAtomic weight of F = 19 g/molMolecular weight =...