lakenyagillard79

23.04.2020 • 

Chemistry

Amino acids are named after two of their functional groups:

A) the amino group (NH2), which acts like a base, and the carboxyl group (COOH), which acts like an acid.
B) Amino acids also contain a third functional group, often called the R group. In alanine, the R group is a methyl group (CH3).
C) In serine, the R group is a methyl alcohol (–CH2OH).

Ответ:

reneewilliams20

20.08.2020

Chemistry

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Yet both compounds and elements are considered pure substances. Pure compounds are created when elements combine permanently, forming one substance. For example, when the elements mercury and oxygen combine, and a chemical reaction takes place, mercury (II) oxide is created.

Hope this helps!

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