CNG is made by compressing natural gas (which is mainly composed of methane, CH4), to less than 1 percent of the volume it occupies at standard atmospheric pressure. It is stored and distributed in hard containers at a pressure of 20â25 MPa (2,900â3,600 psi), usually in cylindrical or spherical shapes.
Definition of chromophore - an atom or group whose presence is responsible for the colour of a compound. Definition of chromophore - an atom or group whose presence is responsible for the colour of a compound.
The definition of chromatin is A complex of nucleic acids (e.g. DNA or RNA) and protei â¦ ns (histones), which condenses to form a chromosome during cell division. In eukaryotic cells, it is found within the cell nucleus whereas in prokaryotic cells, it is found within the nucleoid.