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

 

To determine the minimum molecular weight of the enzyme there must be at least one selenium atom in the enzyme.

Let, M be the molecular weight of the enzyme:

$\%=\frac{Givenmass}{Molecularmass}\times 100$

$2\%=\frac{80}{M}\times 100$

$M=4000$

Therefore, the minimum molecular weight of the enzyme is 4000.