Some Basic Concepts Of Chemistry Question 2

Question: The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (atomic weight = 78.4). Then minimum molecular weight of peroxidase anhydrous enzyme is

Options:

A) $ 15.68 $

B) $ 1.568\times 10^{3} $

C) $ 1.568\times 10^{4} $

D) $ 3.136\times 10^{4} $

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Answer:

Correct Answer: C

Solution:

$ 0.5,g,Se\to 100,g $ peroxidase anhydrous enzyme $ 78.4,g,Se\to \frac{100\times 78.4}{0.5}=1.568\times 10^{4} $ Minimum molecular weight $ \to $ molecule at least contain one selenium.



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