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Blogs > Failsafe
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Failsafe
Profile Blog Joined July 2006
United States1298 Posts
Last Edited: 2009-08-24 05:41:56
August 24 2009 05:34 GMT
#1
Update: Chemical Problem (Chem A -> Chem B)

Input: 1L/min w/ concentration 20gA/L
V (initial) = 50L w/ concentration 10gA / L
Reaction: B = -(.08)gA (L/min)
Output: (0.005)V (L/min)

There's a reaction in the tank where chemical A changes to chemical B.

How can I express this as an equation (i.e. overcome the fact that the output is a function of volume)?

Fast responses please! Roommate needs help and must sleep soon!


**
MrBitter: Phoenixes... They're like flying hellions. Always cost efficient.
FirstBorn
Profile Blog Joined March 2007
Romania3955 Posts
Last Edited: 2009-08-24 06:09:40
August 24 2009 06:09 GMT
#2
Umm... I think homework threads are closed on sigh but since I haven't seen one in a while I might be wrong.
SonuvBob: Yes, the majority of TL is college-aged, and thus clearly stupid.
Failsafe
Profile Blog Joined July 2006
United States1298 Posts
August 24 2009 06:44 GMT
#3
haha, i think it's okay in the blog area but maybe i'm mistaken. in any case he's already gone to bed so i'm indifferent to the fate of this blog
MrBitter: Phoenixes... They're like flying hellions. Always cost efficient.
Failsafe
Profile Blog Joined July 2006
United States1298 Posts
Last Edited: 2009-08-24 06:59:38
August 24 2009 06:48 GMT
#4
in any case the important equation (regardless of what i wrote above, which may have been confused) boils down to

dA/dt = 10 - 0.085 / (50 + 9.915t) and i'll probably have it figured out soon to give him in the morning, but it's been a while for me so if anyone else solves this that would be wonderful
MrBitter: Phoenixes... They're like flying hellions. Always cost efficient.
GHOSTCLAW
Profile Blog Joined February 2008
United States17042 Posts
August 24 2009 07:02 GMT
#5
homework blogs are usually considered okay becuase they're in the blog section as long as the op/blog author shows that they put thought into the problem (they're not just asking for answers), and the blog author should also be a known contributor to the site.

That's of course subject to change, and the fact that I have no idea what the actual rules are, so take that with a grain of salt.

As for the actual problem, can't you just separate the variables and integrate, or am i missing something?
PhotographerLiquipedia. Drop me a pm if you've got questions/need help.
Failsafe
Profile Blog Joined July 2006
United States1298 Posts
August 24 2009 07:20 GMT
#6
Never mind on all of this. Apparently the whole thing was a bit of a misunderstanding with the problem and it's cleared up now
MrBitter: Phoenixes... They're like flying hellions. Always cost efficient.
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