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Laughing gas is Which makes us all laugh.People start laughing at you when you apply this gas while crying.
Nitrous oxide commonly known as laughing gas or nitrous, is a chemical compound, an oxide of nitrogen with the formula N ₂O. At room temperature, it is a colourless non-flammable gas, with a slight metallic scent and taste. At elevated temperatures, nitrous oxide is a powerful oxidizer similar to molecular oxygen.
Formula: N₂O
IUPAC ID: Dinitrogen monoxide
Molar mass: 44.013 g/mol
Boiling point: -88.48 °C
Density: 1.98 kg/m³