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What is the composition of the black powder in a firework?

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Black powder. Black powder, also called gunpowder, is an explosivemixture of sulfur, charcoal and potassium nitrate, KNO3 (also known as saltpetre/saltpeter) that burns rapidly, producing volumes of hotsolids and gases which can be used as a propellant in firearms and as apyrotechnic composition in fireworks.

User Ray Johns
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Step-by-step explanation:

Black powder, also known as gunpowder. It is the earliest known chemical explosive. It is a mixture of sulphur, charcoal, and nitrate (Typically potassium nitrate which gives oxygen for reaction). Potassium nitrate is most important component in terms of quantity and function. Charcoal is not made up of pure carbon rather it is made up of partially pyrolyzed cellulose.

User Vivek Kogilathota
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