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Problem 134

Aspirin (acetylsalicylic acid, $\mathrm{C}_{9} \m…

Johns Hopkins University

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Problem 133

The human body excretes nitrogen in the form of urea, $\mathrm{NH}_{2} \mathrm{CONH}_{2} .$ The key step in its biochemical formation is the reaction of water with arginine to produce urea and ornithine:
(a) What is the mass $\%$ of nitrogen in urea, in arginine, and in
ornithine? (b) How many grams of nitrogen can be excreted as
urea when 135.2 $\mathrm{g}$ of ornithine is produced?

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Chapter 3
Stoichiometry of Formulas and Equations
CHEMISTRY: The Molecular Nature of Matter and Change 2016



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