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Author Topic: CHEM AND BIO HELP AND TIPS HERE  (Read 356971 times)

Offline @d!_†oX!©

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #90 on: November 07, 2009, 11:13:08 am »
at the same temperature and pressure do all molecules of a gas move at the same speed???
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Offline Ghost Of Highbury

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #91 on: November 07, 2009, 11:14:38 am »
thanks adi...i had ritten methane and water and got that rong..though i cud get the equation

4got abt steam

thanks again

@eightAs - thats seperation

@adi - its a weird question, i guess yes, however if there are other particles like dust, some particles may move at different speed due to brownian motion
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Offline eightAs

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #92 on: November 07, 2009, 11:16:09 am »
Mis-interpreted it. I thought he meant obtain in the context of seperation.
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nid404

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #93 on: November 07, 2009, 11:21:55 am »
@adi_toxic- No. They don't move with the same velocity. There's an equation to find out the velocities of molecules......not for igcse...so don't bother..
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Offline @d!_†oX!©

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #94 on: November 07, 2009, 11:23:21 am »
Quote from: A@di on November 07, 2009, 11:14:38 am
thanks adi...i had ritten methane and water and got that rong..though i cud get the equation

4got abt steam

thanks again

@eightAs - thats seperation

@adi - its a weird question, i guess yes, however if there are other particles like dust, some particles may move at different speed due to brownian motion
there are no other particles..its a sample of only carbon dioxide....then???
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Offline dlehddud

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #95 on: November 07, 2009, 11:23:33 am »
Quote from: nid404 on November 07, 2009, 10:14:46 am
in case they don't mention the HCl reaction.....write both...they won't cut ur marks....they'll be impressed :D
bt isnt the whole point of the qualitative analysis to differentiate between aluminum and zinc?
cos they both produce white ppt which dissolve in NaOH and aluminium produces insoluble white ppt in NH3 whilst zinc still produces a white ppt that dissolves in NH3..
isn't that why they mentioned ammonia? It's just bcos i've never heard of the HCl part,,   
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Offline @d!_†oX!©

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #96 on: November 07, 2009, 11:23:49 am »
Quote from: nid404 on November 07, 2009, 11:21:55 am
@adi_toxic- No. They don't move with the same velocity. There's an equation to find out the velocities of molecules......not for igcse...so don't bother..
ohhkkk...u sure naa????
Thanks den....
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nid404

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #97 on: November 07, 2009, 11:25:39 am »
yaa im sure. Check the maxwell boltzman graph(attached) for an idea.....
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Offline @d!_†oX!©

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #98 on: November 07, 2009, 11:31:03 am »
ooohhhhkkaaayyyy!!!!
bt i didnt understand anything from dt graoh lol.. :P
its kk i got my ans nid!!Thanks
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nid404

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #99 on: November 07, 2009, 11:39:47 am »
Quote from: @d!_†oX!© on November 07, 2009, 11:31:03 am
ooohhhhkkaaayyyy!!!!
bt i didnt understand anything from dt graoh lol.. :P
its kk i got my ans nid!!Thanks

oops!!

anyway u got it naa...bas :D
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Offline @d!_†oX!©

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #100 on: November 07, 2009, 11:41:35 am »
yaaa...lol....thanxx!!!!!!
xD
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Offline ~~~~shreyapril~~~~

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #101 on: November 07, 2009, 11:55:39 am »
i gues the steam reforming method is given in TB!!
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Offline @d!_†oX!©

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #102 on: November 07, 2009, 11:57:03 am »
whats TB???
text book??
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Offline ~~~~shreyapril~~~~

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #103 on: November 07, 2009, 11:58:25 am »
yup!!
pata nahin tha kya??

i was telling it to aadi tnot to you !!! abt TB
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nid404

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Re: ~~~All Chemistry Doubts Here~~~
« Reply #104 on: November 07, 2009, 12:23:26 pm »
Quote from: ~~~~shreycool~~~~ on November 07, 2009, 11:58:25 am
yup!!
pata nahin tha kya??

i was telling it to aadi tnot to you !!! abt TB

TB is tuberculosis.....
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