Percentage of Se (atomic mass = 78.4) in peroxidase anhydrase enzyme is 0.5% by mass, then minimum molecular mass of peroxidase anhydrase enzyme is:

Percentage of Se (atomic mass = 78.4) in peroxidase anhydrase enzyme is 0.5% by mass, then minimum molecular mass of peroxidase anhydrase enzyme is:

  1. A

    1.576 ×  104

  2. B

    1.576 × 103

  3. C

    15.76

  4. D

    2.136 × 104

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    Solution:

    The enzyme must contain at least one atom of Se

     0.5 g of ‘Se’ is present in 100g of enzyme,

      78.4 g of 'Se' is present in  ---(g) of enzyme,   molar mass = 100 × 78.40.5  = 1.576 ×  104 g

     

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