HG has various meanings in the Chemistry category. Discover the full forms, definitions, and usage contexts of HG in Chemistry.
Innermost of the planets Greatest angular distance from Sun is about 29deg. Very rarely observable, and then only near sunrise or sunset. Nautical almanac then gives a warning that its appearance may cause it to be mistaken for a star or another planet.
ChemistryA red pigment that binds oxygen and carbon dioxide molecules and carries them through the bloodstream. An allosteric protein that is the primary oxygen-carrying protein in vertebrates; it also plays a role in the transport of CO2 and H+. A heme protein in erythrocytes; functions in oxygen transport.
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