Question

137. Percentage of Se (at. mass = 78.4) in peroxidase anhydrase
enzyme is 0.5% by weight, then minimum molecular mass
of peroxidase anhydrase enzyme is
(a) 1.576 x 104
(b) 1.576 x 10
(c) 15.76
(d) 2.136 x 104​

Answer 1

Explanation:

In peroxidase anhydrous enzyme 0.5% Se is present means, 0.5 g Se is present in 100 g of enzyme. In a molecule of enzyme one Se atom must be present. Hence 78.4 g Se will be present :

0.5 g Se present in 100 g enzyme.

∴78.4 g present in

0.5

100

×78.4=Molecular weight

December 27, 2019