HCl
H2SO4
HNO3
CH3COOH
The common denominator is Hydrogen (H).
Magnesium is NOT an acid, it is a metal element.
By looking at structures and formulas of amino acids one would have to say that carbon was the primary element making up amino acids.
one, and binary compounds don't always contain hydrogen, just 2 different elements
phosphorus is present in nucleic acids and not in proteins
bases
Acids that contain an element in addition to hydrogen are known as oxyacids. These acids have hydrogen, oxygen, and another element in their chemical structure. Examples include sulfuric acid (H2SO4) and phosphoric acid (H3PO4).
The one common element found in all acids is hydrogen. Acids are substances that donate hydrogen ions (H+) when dissolved in water, giving them their characteristic acidic properties.
Nitrogen is found in amino acids but not in glucose.
Nitrogen is found in proteins and nucleic acids but not in other organic compounds. It is a key element necessary for the structure and function of these biomolecules.
Hydrogen
me to :)
Citric acid, like all acids, is a compound.