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03-01-2016
Chemistry

contestada

34 What is the gram-formula mass of Fe(NO3)3?(1) 146 g/mol (3) 214 g/mol
(2) 194 g/mol (4) 242 g/mol

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03-01-2016

Following the atomic mass of each of these atoms, we have 1 Fe atom with 56 amu, 3 N atoms with 14 each, and 9 O atoms with atomic mass 16. Adding these together, we get 56 + 42 + 144 = 144 + 98 = 242. Your answer is (4) 242 g/mol

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