what is the purpose of sulfur in gunpowder
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what is the purpose of sulfur in gunpowder
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what is the purpose of sulfur in gunpowder, is sulfur in gunpowder, is sulfur used to make gunpowder, what is sulfur powder used for, what is the specific purpose of gunpowder, what is the purpose of gunpowder, what is sulfur powder good for, what is sulphur powder used for, what is powdered sulfur, benefits of sulfur powder, why gunpowder is important, what can gunpowder do, benefits of sulphur powder, sulfur powder medical uses
