Question

ASAP PLEASE

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 1

• Option A.) 2 ppm

Step-by-step explanation:

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

• 
  `(60)/(30million)`

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

• 
  `(2)/(1million)`

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.