No, one drop is not necessarily equal to 1 ppm (parts per million). The concentration represented by 1 ppm refers to one part of a substance in one million parts of a solution, which depends on the total volume of the solution. The volume of a drop can vary based on its size and the liquid's properties, so the equivalence depends on the context and specific measurements involved.
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1 ppm is one part per million, or one millionth - percentage (which is latin for per hundred) wise, 1 ppm is .0001%
1 mg/kg = 1 ppm 1 mg = 1000 micrograms (ug) so 10 ug/kg = 0.01 mg/kg = 0.01 ppm
The two are unrelated. ppm means "parts per million", so the amount of grams for 1 ppm will also depend on the size of the sample. For example, if you have a sample of one ton, 1 ppm (a millionth of it) would be 1 gram; if your sample has a mass of one kilogram, 1 ppm would be 1 milligram, etc.
Answer = 1 mm Calcualtion: 1 km = 1000 m 1 ppm = 1 million of a part So, 1000m * 0.000001 = 0.001 m = 1 mm