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A sampling of 30 million particles coming from an exhaust vent contained 60 sulfur dioxide molecules. What is another way of expressing this concentration of sulfur dioxide using this information?

A.) 2 ppm

B.) 50%

C.) 2 ppb

D.) 12,000 g/L

Answer :

Edufirst

Answer:

  • Option A.) 2 ppm

Explanation:

60 particles in 30 million can be expressed as a fraction:

  • [tex]\frac{60}{30million}[/tex]

And, dividing both numerator and denominator by 30, that can be simplified as:

  • [tex]\frac{2}{1million}[/tex]

That means 2 particles of sulfur dioxide in 1 million particles of sample, which is 2 parts per million or 2 ppm, which is the option A.

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