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DraconicAcid
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*Thrash* *thrash* *snap*
Dammit. Now I need a new N00b stick.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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NEMO-Chemistry
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Better get a new one for the next question!!!
Lets hope i dont get to liking the beatings lol  .
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aga
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Erm, the SM stands for ScienceMadness, not Sado-Masochism ...
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DraconicAcid
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That's okay, I needed a new one before the start of classes anyway.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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blogfast25
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Next question, Tue 29/8, will come from DraconicAcid, after my answer to #1.
Please answer to DraconicAcid, not your humble undersigned.
Keep answers concise and to the point, like exam answers, and not like:
| Quote: |
Dear Teacher,
I was thinking about it the other day and while peeling the cabbages I saw the light. So blah blah...
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Thank you!
[Edited on 29-8-2016 by blogfast25]
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aga
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Wow ! That's freaky on quite a few levels.
Anyway, it's 30-8-2016 here, so dump the puzzle on us Draco.
Maybe that's the Puzzle ?
If the puzzle had-was-having-hadded Time-Shift involved, i'd better will-have-gotted-getting-get really drunk to even understand it.
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blogfast25
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Answer to first question:
952 ml CO2 at STP is:
$$n=\frac{0.952 L}{22.4 L/mole}=0.0425\:\mathrm{mole}$$
Half of that is MgCO3, so:
$$\frac12 \times 0.0425 \times 84.134=1.79\:\mathrm{g}$$
... of MgCO3. That leaves:
$$4.932-1.79=3.144\:\mathrm{g}$$
... of the other carbonate. We also know it's 0.02125 moles.
The molar mass of XCO3 is thus:
$$MM=\frac{3.144}{0.02125}=148\:\mathrm{g/mole}$$
... which is very close to the MM of SrCO3.
<hr>
DraconicAcid can now publish Question #2. Thanks.
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ficolas
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That wasnt 4 days 
I finished the problem yesterday at 11-12 pm and decided to wait for tomorrow (today) so that I could check it in a decent hour, and I come here to
find out in that time the answer was posted
I'll just be faster with the second one I guess
Edit: Now I see the "solution provided tomorrow", woops xD
[Edited on 30-8-2016 by ficolas]
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NEMO-Chemistry
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I was telling you about peeling Carrots, NOT Cabbages!
Well i was well out, but handy seeing the answer. So something learned
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DraconicAcid
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3.75 g of a metal chloride is dissolved in water and treated with excess aqueous silver nitrate, resulting in the formation of 10.66 g of precipitate.
a) (3 marks) Give the net ionic equation for the formation of the precipitate (with states and charges).
b) (7 marks) Identify the metal, giving your reasoning.
U2U me your answers (don't worry, I haven't found a new stick yet).
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Lefaucheux10
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hum interresting but i found severals solutions. I think we need one more information to be certain of to have only one solution ! Can you give this
information or not ?
I take the anh forme of a metal chloride for resolve the problem is that correct ?
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CuReUS
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Quote: Originally posted by ficolas  | That wasnt 4 days
I finished the problem yesterday at 11-12 pm and decided to wait for tomorrow (today) so that I could check it in a decent hour, and I come here to
find out in that time the answer was posted
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same here , it was so easy
yeah,you are right. the question is incomplete.
[Edited on 30-8-2016 by CuReUS]
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DraconicAcid
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It is not incomplete. Search your feelings, young padawan....you know it to be true.
| Quote: | | hum interresting but i found severals solutions. |
And is there no flaw in any of those solutions?
[Edited on 30-8-2016 by DraconicAcid]
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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NEMO-Chemistry
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Suck it up boys suck it up. I got caught on the last question because i approached the problem from the wrong angle, if there is several solutions
then you can bet your missing something.
If they are too easy your not a true noob . How long do we get for this one?
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DraconicAcid
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Let's say, 48 hours, starting......NOW!
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Neme
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I can confirm there is only one solution.
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MeshPL
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I'm not a noob, when it comes to theoretical (paper) chemistry (practice is a different thing), but I decided to give this compoetition a try. I
missed the first one, but whatever. I've found a solution (pretty easily) but I'm not sure how to send it via U2U. The equation is a big problem. Is
it possible to send a file (doc or pdf of even png) via U2U?
BTW, will there be a question about organic chemistry?
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j_sum1
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Great question DA. I really enjoyed doing that one. Rather a clever concept.
@MeshPL.
There has been a bit of discussion behind the scenes with blogfast and questions coming from a few different sources. I don't know if there is an OC
one in the pipeline but I hope so. If there is, it is likely to stretch me.
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aga
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Easy ?
A lot of head-scratching going on here.
Edit:
Finally worked it out !
There does seem to be only 1 right answer.
[Edited on 30-8-2016 by aga]
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blogfast25
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Important notice:
"Sorry" to those missed a deadline.
After DraconicAcid's question is closed, several more questions will be published more or less at once and these will stay open till the end
of the competition (back-end of September, exact date and time to be decided on yet).
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NEMO-Chemistry
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| Quote: Originally posted by blogfast25 | Important notice:
"Sorry" to those missed a deadline.
After DraconicAcid's question is closed, several more questions will be published more or less at once and these will stay open till the end
of the competition (back-end of September, exact date and time to be decided on yet). |
I am still head scratching! Doing the questions at once and then a reasonable deadline would be great, i can manage my time better then.
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ficolas
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How should I send the answer?
LatEx doesnt seem to work in u2u and I have a hard to understand handwritting, and a non latex formated answer may be hard to read.
Not everybody knows latex anyways (The reason I tried latEx is because of my shitty handwritting), I just learned some of it because my sister, who is
very bad with computers needed to learn it to make stuff for his degree, so I decided to learn it to help her, and ill probably need it in the future
once I start my chem. E. degree in like a month
Ill send this answer as an screenshot to a latEx thingie
[Edited on 31-8-2016 by ficolas]
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NEMO-Chemistry
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| Quote: Originally posted by ficolas | How should I send the answer?
LatEx doesnt seem to work in u2u and I have a hard to understand handwritting, and a non latex formated answer may be hard to read.
Not everybody knows latex anyways (The reason I tried latEx is because of my shitty handwritting), I just learned some of it because my sister, who is
very bad with computers needed to learn it to make stuff for his degree, so I decided to learn it to help her, and ill probably need it in the future
once I start my chem. E. degree in like a month
Ill send this answer as an screenshot to a latEx thingie
[Edited on 31-8-2016 by ficolas] |
It says to send the answer to Draconic Acid by U2U.
P.S give me the answer and i will forwarded it for you
p.s please dont send me the answer! it was a joke (just in case...)
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DraconicAcid
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It's okay- ficolas has sent me his answer.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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ficolas
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| Quote: |
It says to send the answer to Draconic Acid by U2U.
P.S give me the answer and i will forwarded it for you 
p.s please dont send me the answer! it was a joke (just in case...)  
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I meant like the format of the answer, a picture to a notebook, plain text, latex, etc
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