Which compound is an example of an amino acid? a. glycine (nh 2 ch 2 cooh) b. propanoic acid (ch 3 ch 2 cooh) c. ethyl ethanoate (ch 3 cooch 2 ch 3 ) d. acetamide (ch 3 conh 2 )

A. glycine (NH 2 CH 2 COOH).

Explanation:

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In this case, we understand amino acids as organic compounds that assemble to form high order molecules called proteins, therefore, they are the building blocks of life. Structurally, as shown on the first attached picture, they make up of both an amino group and a carboxily group having the organic chain below. In such a way, the only listed compound that matches with such the aforesaid definitions is glycine whose structure is shown on the other attached document.

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Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

Answer the molar mass of magnesium is 24.305g/mol.