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The number of N atoms in 681 g of C7H5N3O6 is x × 1021. The value of x is___________.

(NA = 6.02 × 1023 mol1) (Nearest Integer)

0 2 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • R

    Answered by

    Raj Pandey | Contributor-Level 9

    a month ago

    Molar mass of C7H5N3O6 = 12 × 7 + 1 × 5 + 14 × 3 + 16 × 6 = 84 + 42 + 96 = 227 g/mol

    Number of moles =  6 8 1 2 2 7  = 3 mol

    ∴  number of N-atoms

    = 3 × 6 . 0 2 × 1 0 2 3 × 3 = 9 × 6 . 0 2 × 1 0 2 3  

    = 5 4 1 8 × 1 0 2 1  

    ∴ x = 5 4 1 8  

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