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A 2400.-gram sample of an aqueous solution contains 0.012 gram of NH3. What is the concentration of NH3 in the solution, expressed as parts per million?

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mixter17
Hello!

The concentration of NH₃ in the solution, expressed in parts per million is 5 ppm. 

To calculate the concentration of a substance in parts per million, one first must keep in mind the definition of parts per million concentration unit:

[tex]ppmX=\frac{mgX}{kgsol} [/tex]

With this definition of parts per million one can calculate the concentration of NH₃, using the following conversion factor to go from grams of NH₃/grams of sample to milligrams of NH₃/kg of sample:

[tex]\frac{0,012g_{NH_3}}{2400 g_{sample}}* \frac{1000g}{1kg}* \frac{1000mg}{1g}=5mg_{NH_3}/kg_{sample} [/tex]

Have a nice day!
Eduard22sly

The concentration (in ppm) of NH₃ in the solution is 5 ppm.

From the question given above, the following data were obtained:

  • Mass of solute (NH₃) = 0.012 g
  • Mass of solution = 2400 g
  • Concentration (ppm) =?

Concentration of the solution in ppm can be obtained as follow:

Concentration = (mass of solute / mass of solution) × 10⁶

Concentration = (0.012/2400) × 10⁶

Concentration = 5 ppm

Therefore, the concentration of the solution in ppm is 5 ppm

Learn more about concentration of solution:

https://brainly.com/question/12066357

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