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Q.

A peroxidase enzyme contains 2% selenium (Se=80). The minimum molecular weight of the enzyme is

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a

4000

b

800

c

1000

d

2000

answer is C.

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Detailed Solution

 Approximate\;Molecular\;Weight\;=\;\large \frac{number\;of\;atoms/molecule\times GAW\;of\;element\times 100}{percentage\;by\;mass\;of\;element\;in\;the\;compound}

Minimum MW means only one gram atom of 'Se' per mole of enzyme

Minimum\;Molecular\;Weight\;of\;Enzyme\;=\;\frac{1\times 80\times 100}{2}\;=\;4000

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