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U smart? do this chemistry problem (pg. 4)
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| butterfly |
| quote: | Originally posted by Fundamental
No, that's probably Minority Report you are thinking of - also a good film. :)
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IDENTITY
Starring John Cusack, Ray Liotta, Amanda Peet, Alfred Molina, Clea Duvall, and Rebecca De Mornay
"Identity is a thriller/horror film about ten strangers stranded in a dusty old Nevada hotel who soon find themselves being murdered one-by-one. This is primarily a character driven film that is built around some gory death scenes and one unexpected plot twist."
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Er... not gory. :p You can still see it! |
sounds like that agatha christie story ten little indians, i think it was called. anyway, i like john cusack lots but still not my kind of movie. |
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| Iyrlk |
| quote: | Originally posted by Heinz
hmm.. howa bout no.
your correct.
but it had to be in Kelvin, and i rounded to the significant figure of 3 because the problem is made up of sig fig's of 3.
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P1=---- P2=-----
V1=31.4 mL V2=25.0 L
T1=23.6C T2=unknown
Using Charle's Law of Gas. Pressure must be constant. His formula is...
V1/T1 = V2/T2 (make into fraction.cant do on the keyboard.V1 OVER T1)
Formulate Equation to find V2 (volume)
31.4/23.6 = 25.0/T2
Cross-multiply
23.6(25.0) = 590 --------->> 590 = 31.4(T2)
590/31.4 = 18.8 = T2 = 18.8C
Convert Celsius measurement of 18.8C to Kelvin
273 + 18.8 = 291.8
Round
291.8 ---->> 292 K
Temperature in smaller tank is 292K or 18.8C |
FATAL mistake: All temperature units has to be changed Kelvins before any cross mulitiplication or applying formulas. |
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| Iyrlk |
| quote: | Originally posted by Evil_Gnome
Psh, chemistry is a piece of . |
screw you. im going to major on chemistry. i love this subject. |
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| Iyrlk |
| quote: | Originally posted by colonelcrisp
charles law is significantly flawed as pressure IS NOT CONSTANT. you can solve it using bernoulli's equation for fluid mechanics or the First law of thermodynamics for closed systems. the solution doesnt result in 18.2 degrees however. and is significantly more complicated. and since i am studing for my fluids exam... i really dont have the time to draw out a solution to that one:D
good luck with that chem tho |
Heinz stated pressure was constant in the question. pointless reply.
The question was a high school chemistry question too. No one teaches complicated thermodynamics in first year of chemistry. |
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| butterfly |
| quote: | Originally posted by Iyrlk
FATAL mistake: All temperature units has to be changed Kelvins before any cross mulitiplication or applying formulas. |
oh yeah.... i should know that. |
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| NeoPhono |
| quote: | Originally posted by Mako
Meh, screw atmospheric chemistry...Where's the real stuff? Like organic Chemistry? |
Here ya go. What is the structure of the compound presented in this 1H NMR? Its composition is C10 H14 O.
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| colonelcrisp |
| quote: | Origionaly posted by Neophono:
Here ya go. What is the structure of the compound presented in this 1H NMR? Its composition is C10 H14 O.
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And thermodynamics was too advanced for this thread.... sheesh..... thats one of those spectrophotometric readouts isnt it??? |
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| NeoPhono |
| quote: | Originally posted by colonelcrisp
And thermodynamics was too advanced for this thread.... sheesh..... thats one of those spectrophotometric readouts isnt it??? |
Yeah, an NMR spectra. |
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| DigiNut |
| quote: | Originally posted by NeoPhono
Yeah, an NMR spectra. |
Looks like an FFT at the output of an FM radio transmitter. :stongue: |
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| NeoPhono |
| quote: | Originally posted by DigiNut
Looks like an FFT at the output of an FM radio transmitter. :stongue: |
Fast Fourier transforms? We don't need no stinkin' fast Fourier transforms!!! :) (From my comp engineering days) |
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| starglider |
| quote: | Originally posted by NeoPhono
Here ya go. What is the structure of the compound presented in this 1H NMR? Its composition is C10 H14 O.
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Looks like 4-isopropylanisole to me. |
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| NeoPhono |
| quote: | Originally posted by starglider
Looks like 4-isopropylanisole to me. |
You are correct, although I believe anisole is a common name and not technically the "correct" way to name methyoxybenzene. So technicially (IUPAC speaking) it's 4-isopropyl-1-methoxybenzene, but I'd probably give you full credit, since anisole is methoxybenzene. |
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