chem
posted by manny .
Hi,
I need help with this problem I have no idea how to go about it
_______________________________________________________________
An average adult breathes about 8.5 x 10^3 L of air per day. The concentration of lead in higly polluted urban air is 7.0 x 10^6 g of lead per one m3 of air. Assume that 75% of the lead is present as particles less than 1.0 x 10^6 m in diameter, and that 50% of the particles below that size are retained in the lungs. Calculate the mass of lead absorbed in this manner in one year by an average adult living in this environment.
***Note answer has two sigfigs
__________________________________________________
Thanks for all the help you guys can provide,
manny

How about this hint.
(7.0 x 10^6 g/m^{3}) x 0.75 x 1/2 = amount of consumable lead. Convert 8.5 x 10^{3} L to cubic meters (or the other way aroundit doesn't matter which one you convert) and calculate the amount consumed per day. Then multiply by 365 to convert to amount per year. 
ok! thanks... Dr. Bob your the best!!!
I assumed you meant (7.0 x 10^6 g/m3)
I got 8.1 x 10^3 g Pb / year
_____________________________________________________________________________________________________________________
Respond to this Question
Similar Questions

AP Bio potato/osmosis lab
If a potato core is allowed to dehydrate by sitting in open air, would the water potential of the potato cells decrease or increase? 
Math
Suppose that humans walk about 10,000 steps per day on average. Your average step is probably about 18 inches. If so, how many inches per day do you walk? 
math
Suppose that humans walk about 10,000 steps perday on average. Your average step is probably about 18 inches. If so, how many inches per day do you walk? 
math
Suppose that humans walk about 10,000 steps per day, on awerage. 1. Your average step is probably about 18 inches. If so, how many inches per day do you walk? 
MTH/208
East Battle Lake in Minnesota covers an area of about 1950 acres or 8.5X10^7 square feet and its average depth is about 3.2x10^1 feet. a. Estimate the cubic feet of water in the lake. (hint: Volume=area x average depth.) b. One cubic … 
Math
During one year, about 13 million adults over 18 years old in the U.S. spent a total of about 93 billion hours online at home. On average how many hours per day did each adult spend on line at home? 
math
During one year, about 13 million adults over 18 years old in the U.S. spent a total of about 93 billion hours online at home. On average how many hours per day did each adult spend on line at home? 
Math
Please explain in detail how to solve this: During one year, about 163 million adults over 18 years old in the U. S. spent a total of about 93 billion hours online at home. On average, how many hours per day did each adult spend online … 
Math
When at rest an average adult breathes in and out every 4s. the average minimum amount of air the lungs is 0.08L and the average maximum amount of air in the lungs is 0.82L. Assume the lungs have a minimum amount of air at t=0 where … 
Chemistry
When you try to leave your room you learn that the only door out is locked. Assuming there is no air flow into the room (air tight with no ventilation system) how long can you survive in the room (5 meters long, 5 meters wide, 5 meters …