LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Nitrous oxide. Molecular model of the gas nitrous oxide (N2.O), also known as laughing gas. This colourless non-flammable gas is used in surgery and dentistry for its aesthetic and analgesic effects. Atoms are represented as spheres and are colour-coded: nitrogen (blue) and oxygen (red). Illustration.
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