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Nicotine is an addictive poisonous alkaloid C 5 H 4 NC 4 H 7 NCH 3 , derived from the tobacco plant. Nicotine is used as an insecticide. Forty milligrams of nicotine has killed an adult (Merck Index). One deep drag on a cigarette can provide 0.35 mg nicotine. Therefore, one cigarette can provide 3.5 mg of nicotine and twenty one cigarettes provide 73.5 mg of nicotine. There is often in excess 250 mg of nicotine in one hundred cigarettes. grandmother of the bride dresses

How many milograms of nicotine are in one cigarette