Respuesta :

maacastrobr

Answer:

0.879 mg

Explanation:

To solve this problem we need to use the definition of ppm:

  • ppm = μg solute / g solution

With the above information in mind we can calculate the micrograms of lead using the concentration (13.97 ppm) and mass of solution (62.9 g):

  • μg lead = 13.97 ppm * 62.9 g
  • μg lead = 878.713 μg

Finally we convert μg to mg:

  • 878.713 μg *  [tex]\frac{1mg}{1000ug}[/tex] = 0.879 mg of lead

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