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4 November, 12:47

The most common form of nylon is 63.68% carbon, 9.80% hydrogen, 12.38% nitrogen and 14.14 % oxygen. Calculate the empirical formula for nylon.

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  1. 4 November, 15:47
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    The empirical formule is C6H11NO

    Explanation:

    Step 1: Data given

    Suppose the mass = 100 grams

    Nylon contains:

    63.68 % carbon = 63.68 grams

    9.80 % hydrogen = 9.80 grams

    12.38 % nitrogen = 12.38 grams

    14.14 % oxygen = 14.14 grams

    Molar mass C = 12.01 g/mol

    Molar mass H = 1.01 g/mol

    Molar mass nitrogen = 14.01 g/mol

    Molar mass oxygen = 16.00 g/mol

    Step 2: Calculate moles

    Moles = mass / moles

    Moles C = 63.68 grams / 12.01 g/mol

    Moles C = 5.302 moles

    Moles H = 9.80 grams / 1.01 g/mol

    Moles H = 9.70 moles

    Moles N = 12.38 grams / 14.01 g/mol

    Moles N = 0.8837 moles

    Moles O = 14.14 grams / 16.00 g/mol

    Moles O = 0.8838 moles

    Step 3: Calculate mol ratio

    We divide by the smalleste amount of moles

    C: 5.302/0.8837 = 6

    H: 9.70/0.8837 = 11

    N: 0.8837/0.8837 = 1

    O: 0.8838/0.8837 = 1

    The empirical formule is C6H11NO
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