Posted: 9/7/2004 11:01:48 PM EST
[Last Edit: 9/7/2004 11:10:04 PM EST by mtechgunman]
Ok, i need some homework help. It is for a chem class.
Here is the problem: If the concentration of mercury in the water of a polluted lake is 0.41 µg per liter of water, what is the total mass (kg) of mercury in the lake? The lake has a surface area of 100 square miles and an average depth of 25 feet. µg= 1x10^6 m anybody know how to do this? the answer has to be in kg. 

Aw jeeze, not this shit again.




How old are you?
First find the volume of the lake and convert to Liters Hints : 1 mile = 5280 feet & 1 liter = .0353cubic feet Then when you have the number of liters multiply by 0.41 to get the micrograms then convert micro grams to Kg 


almost 19. Thanks abunch everyone. 

Aw jeeze, not this shit again.

FrdMNo need to be a dick about it. What the hell does his age have to do with a chemistry class?
But yes, you have the density, conert your volume to liters, multiply and you have your mass. Count your decimals and remember to keep your units straight. Simplified problem: You have one gram of X/ liter of water. you have five liters of water. How many grams of X do you have? 5 grams. 


I sucked at math so I'm not getting involved


"Driver carries at least 300 rds"

don't worry, its not math. its chem. 

Aw jeeze, not this shit again.

numbers bad 

"Driver carries at least 300 rds"

Who's being a dick? I just helped him! 


Normal water or compressed water?


A sad state of affairs when theres nothing we can do, sit and watch our country die.

Explanations above are fine.
This is the first problem I did out since Calculus freshman year. Honestly having done anything outside of the basics since. History major rawks.  BG 

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