How many metric tons of Pb fall on the 535 square kilometers of Chicago in 1 year?..more INFO inside.help plz? - chicago metallic bakeware
The dust falls in Chicago, at a rate of 65 mg / (m2day1). Main metallic elements in powder-Al, Mg, Cu, Zn, Mn, and B4. Pb accumulates at a rate of 0.03 mg * m-2 * day-1. How many tons of lead in the case, the 535 square miles of Chicago in 1 year?
(1 tonne = 1000 kg)
Wednesday, January 20, 2010
Chicago Metallic Bakeware How Many Metric Tons Of Pb Fall On The 535 Square Kilometers Of Chicago In 1 Year?..more INFO Inside.help Plz?
2 comments:
5858 tons
When lead accumulates in the 0.03 mg / m ^ 2 times per day
Then in a year, which accumulates each m ^ 2 365 * 0.03 = 10.95 mg / m ^ 2
There are 535 km ^ 2 = 286225000000 m ^ 2
Thus, the entire collection has = 10.95 * 286225000000
A = mg = 3134163750000 tonnes 3134.16375
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