TeenHelp
Support Forums Today's Posts

Get Advice Connect with TeenHelp Resources
HelpLINK Facebook     Twitter     Tumblr     Instagram    Hotlines    Safety Zone    Alternatives

You are not registered or have not logged in

Hello guest! (Not a guest? Log in above!)

As a guest on TeenHelp you are only able to use some of our site's features. By registering an account you will be able to enjoy unlimited access to our site, and will be able to:

  • Connect with thousands of teenagers worldwide by actively taking part in our Support Forums and Chat Room.
  • Find others with similar interests in our Social Groups.
  • Express yourself through our Blogs, Picture Albums and User Profiles.
  • And much much more!

Signing up is free, anonymous and will only take a few moments, so click here to register now!


Education and Careers Work of any kind can get stressful at times. Ask in this forum if you need help with coursework, applications, and more.

Closed Thread
 
Thread Tools Search this Thread
  (#1 (permalink)) Old
Potato Head Offline
Member
Welcome me, I'm new!
*
 
Potato Head's Avatar
 
Name: Non'ya
Age: 26
Gender: Female
Location: Earth.

Posts: 17
Blog Entries: 19
Join Date: January 6th 2009

Bleck, balencing equations. - January 11th 2009, 03:05 PM

Chemistry help you guys.
Help me balance this equation. . . . . .
C2H2(g) + O2(g)---> CO2(g) + H2O(g)
I know there is supposed to be prefixes, call me stupid but I am not really seeing how I can balance this. I always end up with some imperfection.
Thank you for your time.
   
  (#2 (permalink)) Old
Gaia Offline
same same, but different.
Outside, huh?
**********
 
Gaia's Avatar
 
Name: Lou
Age: 28
Gender: Female
Location: ekam eveileb

Posts: 3,807
Blog Entries: 8
Join Date: January 6th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:10 PM

2C2H2+5O2--->4CO2+2H2O

Yaaaay I love doing this


"Life is pain, anybody that says different is selling something" ~ Fezzik's Mother, The Princess Bride. ♥

"To die, would be an awfully big adventure."~ Peter Pan

"Do not believe in anything simply because you have heard it.
Do not believe in anything simply because it is spoken and rumoured by many.
Do not believe in anything simply because it is found written in your religious books.
Do not believe in anything merely on the authority of your teachers and elders.
Do not believe in traditions because they have been handed down for many generations.
But after observation and analysis, when you find that anything agrees with reason and is conducive to the good and benefit of one and all, then accept it and live up to it."

~ The Buddha

14-04-2010. R.R <3
   
  (#3 (permalink)) Old
Hyper Sonic Offline
Banned
I can't get enough
*********
 
Hyper Sonic's Avatar
 
Gender: Male
Location: England

Posts: 2,374
Blog Entries: 23
Join Date: January 5th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:10 PM

Just pick an atom and do it, balancing them one by one.

2C2H2 + 5O2 ---> 4CO2 + 2H2O

there is actually a formula for hydrocarbon combustion: Let the original compound be CxHy

CxHy + (x+y/4)O2 ---> xCO2 + (y/2)H2O

For your example: x = 2 and y=2

C2H2 + 2.5O2 ---> 2CO2 + H2O

this would be fine but in case you want only whole numbers infront multiply each one by 2 to give mine (and Lou's) answer

Last edited by Hyper Sonic; January 11th 2009 at 03:17 PM.
   
  (#4 (permalink)) Old
Gaia Offline
same same, but different.
Outside, huh?
**********
 
Gaia's Avatar
 
Name: Lou
Age: 28
Gender: Female
Location: ekam eveileb

Posts: 3,807
Blog Entries: 8
Join Date: January 6th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:11 PM

Isn't it ethyne Lee?


"Life is pain, anybody that says different is selling something" ~ Fezzik's Mother, The Princess Bride. ♥

"To die, would be an awfully big adventure."~ Peter Pan

"Do not believe in anything simply because you have heard it.
Do not believe in anything simply because it is spoken and rumoured by many.
Do not believe in anything simply because it is found written in your religious books.
Do not believe in anything merely on the authority of your teachers and elders.
Do not believe in traditions because they have been handed down for many generations.
But after observation and analysis, when you find that anything agrees with reason and is conducive to the good and benefit of one and all, then accept it and live up to it."

~ The Buddha

14-04-2010. R.R <3
   
  (#5 (permalink)) Old
Hyper Sonic Offline
Banned
I can't get enough
*********
 
Hyper Sonic's Avatar
 
Gender: Male
Location: England

Posts: 2,374
Blog Entries: 23
Join Date: January 5th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:20 PM

Quote:
Originally Posted by ghostlyheartbeat View Post
Isn't it ethyne Lee?
Yes it would be. Triple bonds are annoying xD
   
  (#6 (permalink)) Old
Potato Head Offline
Member
Welcome me, I'm new!
*
 
Potato Head's Avatar
 
Name: Non'ya
Age: 26
Gender: Female
Location: Earth.

Posts: 17
Blog Entries: 19
Join Date: January 6th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:24 PM

Thanks guys so much.
I can see how you got that and it makes sense to me now. Can I ask one more question?
I'm not quite understanding this stoichiometry stuff, it says (for the same equation) interpret the balanced equation in terms of relative numbers of moles, volumes of gas at STP, and masses of reactants and products. Is this when you use the prefixes to determine the molecules?

Do I just write down that, and the volume (1 mole= 22.4 L)
I'm so confused.
   
  (#7 (permalink)) Old
Hyper Sonic Offline
Banned
I can't get enough
*********
 
Hyper Sonic's Avatar
 
Gender: Male
Location: England

Posts: 2,374
Blog Entries: 23
Join Date: January 5th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:29 PM

No problem

The relative number of moles is the number infront of the compound. For example for two moles of ethyne (C2H2) you will have four moles of CO2

One mole of any gas takes up 22.4L at STP. This means you will have 22.4 multiplied by the numbers infront of the term to get the volumes.
Ie: 22.4(2+5) is on the left and 22.4(4+2) on the right (your reactants have more volume)

The masses will be the number infront of the term multiplied by each term's relative molecular mass (obtained by adding the relative atomic mass of the elements it has)

Reactants: 2*(12*2 + 1*2) + 5*(16*2) = 212
Products: 4*(12+2*16) + 2(16 + 2*1) = 228
   
  (#8 (permalink)) Old
Jaymz404 Offline
Banned
Regular TeenHelper
*****
 
Jaymz404's Avatar
 
Name: James
Age: 32
Gender: Male
Location: England

Posts: 484
Join Date: January 7th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:31 PM

A good tip for balancing equations since you are strugling with them is to write each element down.

For example Hydrogen and lets say there were 6 Hydrogens.

So H: 6
O: 4
N: 2

Etc repeat, and then you can compare to the other side and find out which side you are lacking.

As for your questions, I do not mind helping people with Chemistry as it is a fairly hard subject, but I honestly don't feel we should be doing your homework for you as you will learn nothing.
   
  (#9 (permalink)) Old
Marionette. Offline
Member
Experienced TeenHelper
******
 
Marionette.'s Avatar
 
Gender: Other

Posts: 543
Join Date: January 5th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:35 PM

2C2H2 + 5O2---> 4CO2 + 2H2O
2moles 5 moles 4mol 2moles

1mole = 22.4 L (Volume) so moles from equations x volume of 1 mole

44.8L 112L 89.6L 44.8L


I think =/






   
  (#10 (permalink)) Old
Potato Head Offline
Member
Welcome me, I'm new!
*
 
Potato Head's Avatar
 
Name: Non'ya
Age: 26
Gender: Female
Location: Earth.

Posts: 17
Blog Entries: 19
Join Date: January 6th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:37 PM

Thank you, Lee.
Thanks for the tip, James. I'm asking for help on one of my questions which should help me with the rest. I have no other way of finding this information out right now and it's due first thing tomorrow. I am in no way trying to cheat out of my work by attaining the answers over the internet, I'm merely requesting help on a subject I am having great difficulty with

So from what I understand it is the prefixes you multiply the volume, etc. with?
JADE!! Thank you.
I understand now!
Oh my god! Epiphany here! Thank you so much.
   
  (#11 (permalink)) Old
Hyper Sonic Offline
Banned
I can't get enough
*********
 
Hyper Sonic's Avatar
 
Gender: Male
Location: England

Posts: 2,374
Blog Entries: 23
Join Date: January 5th 2009

Re: Bleck, balencing equations. - January 11th 2009, 03:37 PM

Yeah, which makes balancing it important
   
Closed Thread

Bookmarks

Tags
balencing, bleck, equations

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All material copyright 1998-2019, TeenHelp.
Terms | Legal | Privacy | Conduct | Complaints

Powered by vBulletin®.
Copyright ©2000-2019, Jelsoft Enterprises Ltd.
Search engine optimization by vBSEO.
Theme developed in association with vBStyles.