10 Questions
1 Views

# Atmospheric Chemistry Concentration Units Quiz

Created by
@DexterousMossAgate4378

### What is the concentration unit for atmospheric pollutants expressed as parts per million by volume?

• ppm(1 in 10^6) (correct)
• ppt(1 in 10^12)
• %(v/v) or % (mol/mol)
• ppb(1 in 10^9)
• ### What does 1 ppmv (parts per million by volume) represent?

• 10^-4 % by volume
• mL/m^3
• 1 L pollutant / 10^6 L air
• 1 volume of gaseous pollutant/10^6 volumes of air (correct)
• ### How is the concentration unit μg/m^3 defined?

• M μg/m^3 = 40.9 (molar mass of a gaseous pollutant)
• 1 vol pollutant/10^9 volumes of air
• 0.0409 (M) μg/m^3
• μg of a pollutant / m^3 of air at 25˚C and 1 atm (correct)
• ### What does 1 ppb represent in terms of the volume of pollutant and volumes of air?

<p>1 vol pollutant/10^9 volumes of air</p> Signup and view all the answers

### What does 1 ppm equal to in terms of parts per billion (ppb) and parts per trillion (ppt)?

<p>10^3 ppb = 10^6 ppt</p> Signup and view all the answers

### What does the concentration unit ppmv represent?

<p>1 volume of gaseous pollutant/10^6 volumes of air</p> Signup and view all the answers

### What does the concentration unit ppb represent?

<p>1 volume of pollutant/10^9 volumes of air</p> Signup and view all the answers

### How is the concentration unit μg/m^3 defined?

<p>Micrograms of pollutant per cubic meter of air</p> Signup and view all the answers

### What does 1 ppm equal to in terms of parts per billion (ppb) and parts per trillion (ppt)?

<p>1 ppm = 10^3 ppb = 10^6 ppt</p> Signup and view all the answers

### What is the molar mass M in the equation 1 ppm = 40.9 M μg/m^3?

<p>Molar mass of the gaseous pollutant</p> Signup and view all the answers

Use Quizgecko on...
Browser
Information:
Success:
Error: