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22 October, 07:14

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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  1. 22 October, 07:58
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    M Fe = 55,85g ≈ 56g

    m O = 16g

    m N = 14g

    m Fe (NO3) 3 = 56g + 3*14g + 3*3*16g = 242g/mol

    answer: (4)
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