Richtee Posted July 14, 2008 Share Posted July 14, 2008 I debated posting this in the chem section, mods feel free to move it there...but it's SOO basic... Been a long time removed from a chem book for me but I seem to recall: If I'm given an equation say... 4 (x)+ 1 (y) = yadayada, if I want to formulate the compound on the left, I find the molar weights to do this as in (x)=3 (y)=2 molar weights- so mass wise...errr incorrectly WEIGHT wise it's like 12 +2. Correct? Link to comment Share on other sites More sharing options...
Bonny Posted July 14, 2008 Share Posted July 14, 2008 This site might help:http://misterguch.brinkster.net/molarmass.html Link to comment Share on other sites More sharing options...
Richtee Posted July 14, 2008 Author Share Posted July 14, 2008 This site might help:http://misterguch.brinkster.net/molarmass.html oook... sooo given I have the mol weight of element/compound X and Y, I am correct...yes? Link to comment Share on other sites More sharing options...
Bonny Posted July 14, 2008 Share Posted July 14, 2008 I think you have the idea. Here's an example using 1 mol of BaCO3: BaCO3 + 2HNO3 = Ba(NO3)2 + CO2 + H2O 197.336g + 2(63.012) = 261.336g + 44.0095 +18.01524 323.36 = 323.36 Hope that helps. Link to comment Share on other sites More sharing options...
Richtee Posted July 14, 2008 Author Share Posted July 14, 2008 BaCO3 + 2HNO3 = Ba(NO3)2 + CO2 + H2O 197.336g + 2(63.012) = 261.336g + 44.0095 +18.01524 323.36 = 323.36 Hope that helps. Yep...Thank ya kindly Sir! Gads chem used to suck. One of the most inexact sciences I ever seen! More exceptions than rules I swear. LOL... loved my physics tho. Link to comment Share on other sites More sharing options...
Bonny Posted July 15, 2008 Share Posted July 15, 2008 Rather than inexact, I'd look at chemistry as a more complicated science. I loved chemistry in highschool, and hated physics. Link to comment Share on other sites More sharing options...
FrankRizzo Posted July 15, 2008 Share Posted July 15, 2008 http://imgs.xkcd.com/comics/purity.png If you guys have never read XKCD.com, you really need to. New strips every Mon, Wed, Fri. Link to comment Share on other sites More sharing options...
Richtee Posted July 15, 2008 Author Share Posted July 15, 2008 http://imgs.xkcd.com/comics/purity.png Hah! That's funny shit right there! I like the Red Wings reference. Din't know Al Sobotka was a biologist!<The "official" Octopi remover at Joe Louis Arena> Link to comment Share on other sites More sharing options...
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