Exam 1 Review

Question 1

Explain the difference between PM 2.5 and PM 10 in terms of size and health effects

Answer 1

PM 2.5 is much smaller than PM 10, so it is easier for it to get into the lungs then the blood stream.

Question 2

What are the conversion factors for:
1%= 1 atom of how money molecules?
How many molecules are in 1 PPM?
What is 1% in PPM?

Answer 2

1%= 1 atom/ 100 molecules
1 ppm = 1 molecule/ 10^6 molecules
1% = 1/ 1,000,000

Question 3

When going from pph to ppm, what is the conversion?
PPM to PPH?

Answer 3

PPH to PPM- 1,000,000/100
PPM to PPH- 100/1,000,000

Question 4

What percent of air is nitrogen, oxygen, and argon?

Answer 4

Nitrogen- 78% of the air
Oxygen- 21% of the air
Argon- .9% of the air

Question 5

Why is carbon monoxide considered to be a air pollutant?

Answer 5

When breathed into lungs, carbon monoxide can be hazardous to human health

Question 6

What are the health effects resulting from long-term exposure to carbon monoxide?

Answer 6

Carbon monoxide interferes with the ability of hemoglobin to carry oxygen throughout your body. Exposure to CO in high enough concentrations can cause a person to die due to lack of oxygen. Shorter-term exposure leads to dizziness or a headache.

Question 7

What 10^? Is PPM?
What 10^? Is PPB?

Answer 7

PPM= 10^6
PPB= 10^9

Question 8

Going from grams to moles….
Going from moles to atoms/molecules….

Answer 8

Grams —> moles = molar mass (atomic mass) # grams/ 1 mole
Moles —> atoms/molecules = Avogadro’s # (6.022 x 10^23)molecules / 1 mole