Science / Chemistry / Nitrite: 1. The NO2- ion, formed by reaction of nitrous acid with a base. 2. A compound containing the NO2- ion.


Life Style / Coffee / Turpeny: An aromatic sensation created by a slightly volatile set of hydrocarbon compounds and nitrites found in coffee's aftertaste that produces either resinous sensations similar to turpentine or medicinal MORE


Health / Vitamins / Nitrosamine: Potentially carcinogenic compounds formed by the reactions of nitrites with amines or amides normally present in the body. MORE

Nitrogen (N)

Science / Periodic Table of Elements / Nitrogen (N): Atomic number: 7, Atomic mass: 14.0067 g.mol -1, Electronegativity: 3.0, Density: 1.25*10-3 at 20°C, Melting point: -210 °C, Boiling point: -195.8 °C, Vanderwaals radius: 0.092 nm, Ionic rad MORE

Hydrogen (H)

Science / Periodic Table of Elements / Hydrogen (H): Atomic number: 1, Atomic mass: 1.007825 g.mol -1, Electronegativity: 2.1, Density: 0.0899*10 -3 -3 at 20 °C, Melting point: - 259.2 °C, Boiling point: - 252.8 °C, Vanderwaals radius: 0.12 nm, MORE


Science / Marine Biology / Chemosynthesis: Primary production of organic matter, using various substances instead of light as an energy source; confined to a few groups of microorganisms MORE