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Gen Chem
Archived | Views: 1376 | Replies: 11 | Started 15 years ago
 
#616352 | Sun - Oct 11 2009 - 16:01:10
randomtask*
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am i doin this right

Al + Br2 -> Al2Br6
balances to
2Al + 3Br2

how much Br2 do you need to fully react with 2.56g Al

2.56g Al / 2 = 1.28g 2Al / molar mass Al (27) = .047mol al

.047mol 3Br2 * molar mass Br (70) = 3.29g 3Br2

3.29g 3br2 * 3 = 9.87g Br2
 
#616358 | Sun - Oct 11 2009 - 16:03:55
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should be @ jew/gull/evan imo
 
#616366 | Sun - Oct 11 2009 - 16:08:35
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Quote (smoked @ Sun - Oct 11 2009 - 17:03:55)
should be @ jew/gull/evan imo


its valid at all of them
didnt want to mass pm @ chem nerds though
 
#616373 | Sun - Oct 11 2009 - 16:18:26
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took chem first semester and forgot most of it
so +1 ofc
 
#616379 | Sun - Oct 11 2009 - 16:23:11
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Quote (boblong11 @ Sun - Oct 11 2009 - 22:18:26)
took chem first semester and forgot most of it
so +1 ofc


took chem over than 10 years ago and forgot most of it
so +1 ofc
 
#616401 | Sun - Oct 11 2009 - 16:39:21
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Quote (randomtask @ Sun - Oct 11 2009 - 16:01:10)
am i doin this right

Al + Br2 -> Al2Br6
balances to
2Al + 3Br2

Yes

how much Br2 do you need to fully react with 2.56g Al

2.56g Al / 2 = 1.28g 2Al / molar mass Al (27) = .047mol al

.047mol 3Br2 * molar mass Br (70) = 3.29g 3Br2

3.29g 3br2 * 3 = 9.87g Br2

Don't remember, p sure


 
#616454 | Sun - Oct 11 2009 - 19:08:54
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no you need to convert from grams to moles first then do your molar ratios
 
#616482 | Sun - Oct 11 2009 - 19:34:28
randomtask*
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Quote (bubbachunk @ Sun - Oct 11 2009 - 20:08:54)
no you need to convert from grams to moles first then do your molar ratios


k t4t
 
#616486 | Sun - Oct 11 2009 - 19:38:33
smoked*
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Quote (randomtask @ Sun - Oct 11 2009 - 20:34:28)
Quote (bubbachunk @ Sun - Oct 11 2009 - 20:08:54)
no you need to convert from grams to moles first then do your molar ratios


k t4t


seems that I was right
 
#616502 | Sun - Oct 11 2009 - 19:54:08
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Just finished my finance homework

heads up fags

http://www.youtube.com/watch?v=ZThquH5t0ow
 
#616508 | Sun - Oct 11 2009 - 20:03:18
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also your ratio is 2 moles of al per every 3 moles of br2 and the molar mass of br2=79*2
 
#616579 | Sun - Oct 11 2009 - 20:57:33
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i lol at the chem toilets

:donno: why
Archived | Views: 1376 | Replies: 11 | General Archive - 2009 Topic List
 
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