Question

Assignment 4- Acrosols Note: Each question is worth 4 points. What is the diameter of a spherical particle if it has a volume of 1.96 m? What is its surface area? 2. Lycopodium spores are essentially monodisperse, being approximately 10 m in diameter. If these spores have a density of 1.7 gm/cm, how many spores are there in a 1 gram sample? 3. In smoking one, non-filtered cigarette, a smoker inhales 350 mL of acrosol containing 20 mg of tobacco smoke particles. If these particles are unit density spheres with 0.4 pm diameter, how many particles does the smoker inhale from one cigarette? What is the mass concentration of the smoke? Make a ratio comparison of this smoke concentration to the U.S. National Ambient Air Quality Standard (annual average) of 75 /m

Answer 1