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Chemistry | 11th Edition | ISBN: 9780073402680 | Authors: Raymond Chang
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Solved: Lysine, an essential amino acid in the human body,

Chapter 3, Problem 127P

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QUESTION:

Lysine, an essential amino acid in the human body, contains C, H, O, and N. In one experiment, the complete combustion of 2.175 g of lysine gave 3.94 g \(\mathrm{CO}_{2}\) and 1.89 g \(\mathrm{H}_{2} \mathrm{O}\). In a separate experiment, 1.873 g of lysine gave 0.436 g \(\mathrm{NH}_{3}\).

(a) Calculate the empirical formula of lysine,

(b) The approximate molar mass of lysine is 150 g. What is the molecular formula of the compound?

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QUESTION:

Lysine, an essential amino acid in the human body, contains C, H, O, and N. In one experiment, the complete combustion of 2.175 g of lysine gave 3.94 g \(\mathrm{CO}_{2}\) and 1.89 g \(\mathrm{H}_{2} \mathrm{O}\). In a separate experiment, 1.873 g of lysine gave 0.436 g \(\mathrm{NH}_{3}\).

(a) Calculate the empirical formula of lysine,

(b) The approximate molar mass of lysine is 150 g. What is the molecular formula of the compound?

ANSWER:

Step 1 of 5 

Mass of lysine = 2.175 g

Mass of  = 3.94 g

Mass of  = 1.89 g

In a separate experiment, mass of lysine is 1.873 g and mass of  is 0.436 g.

 

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