Answer to Question #257458 in General Chemistry for Manuel

Question

3. The human body excretes nitrogen in the form of urea, NH2CONH2. The key biochemical step in urea formation is the reaction of water with arginine to produce urea and ornithine:

 (a) What is the mass percent of nitrogen in urea , arginine, and ornithine? 

(b) How many grams of nitrogen can be excreted as urea when 143.2 g of ornithine is produced?

Answer 1

a)

In urea 46.62%

In arginine 32.146%

In ornithine 21.186%

b)

30.344g nitrogen