58 replies to this topic

[roohiya]

Muharrir, on May 24 2009, 11:55 AM, said:

Quote

I was not complaining, nor was I worried if you refer to my above post. Alhamdulillaah, I was simply thinking aloud as to where the rest went Im quite happy with 79%!

alhamdulillah

oh btw, for honours they lower the standards i believe so abul hassan if u do honours, then u willcome across this slightly demented system of 2nd class 1st and 2nd class 2nd

How they're said:

1 = First
2, 1 = Two-One
2, 2 = Two-Two

[Muharrir]

yeah, ours are said as above. ours sound better

[pearl_of_da_sea]

roohiya, on May 24 2009, 07:56 PM, said:

0-39% - Fail
40-49% - Pass
50-59% - 2,2
60-69% - 2,1
70-100% - 1 (First)

Wow you guys get it so much easier! Imagine getting a 40% and still passing....what a heavenly thought.

[al-ghareebah]

^ And then think, some people don't even get 40%, I have a friend who *aims* for 40% and she really doesn't care to get any higher, even though she most definitely could.

I wouldn't set her loose in the professional work place after she 'qualifies,' she agrees with me whole heartedly on that, lol.

[roohiya]

Ghareeb!

[al-ghareebah]

^ its like ..'don't say the S word <_<' lol

Crazy thread, hard to believe we did fine alhamdulillaah. I miss the nerves and the stress in a weird kinda way ..really

...I thoroughly look forward to my finals

[al-ghareebah]

Rooh...any 'issues' relating to your finals (which Im sure you've got nicely under control) ..be sure to use this thread!


This thread is 100% nerdville.

[roohiya]

Thanks for the revival Ghareebah, good days!

As of now, it's a 28 day count down my friend!

Anybody doing their thesis, needs help with project, poster presentations - here to help inshaa'Allah.

Revision is yet to begin for a series of back to back exams in less than 3 weeks.

WatTawfeequ billah!

And yourself Ghareebah? Where has the wondrous world of Science taken you to?

[al-ghareebah]

roohiya, on Apr 21 2010, 12:30 AM, said:

And yourself Ghareebah? Where has the wondrous world of Science taken you to?

Weird places ...honestly, I got to show you the pics at some point ..remind me.

Woah wait, 28 days till your finals?!

[Abu Muhammad]

Assalamu Alaikum,

With the following reaction, why is it physically impossible for it to occur under low pressures?

F + NO2 --> NO2F

[al-ghareebah]

Abu Muhammad, on 03 June 2010 - 01:02 AM, said:

Assalamu Alaikum,

With the following reaction, why is it physically impossible for it to occur under low pressures?

F + NO2 --> NO2F

Wa-alaykum salaam

For any reaction to occur the molecules present have to collide with energies equal to or greater than the activation energy for that particular reaction. Activation energy is the minimum energy required before a reaction can take place.

So two things here, 1) Collision (orientation also matters) 2) At the right energy

The reaction you put above is in the gas phase i.e. all the reactants are gases.

Take a high pressure scenario, lots of those molecules present in the reaciton vessel, or a given space, lots of molecules to collide against the sides of the vessel which generates even more pressure, the molecules go shooting off in all directions increasing the likelihood of reaction happening.

If for example the reactants were just floating around in the air, (there was no vessel say?), then pressure would be very low ..how exactly will the two above mentioned criteria ever be fulfilled and the reaction take place under such low pressure?

..make sense?

[Abu Muhammad]

Ahhhh...


Barak Allahu Feeki

[al-ghareebah]

^ Wa-iyyak

You've quoted the equation in your question for which theres hardly a reference to in what I posted above in response.. it just seemed a bit odd to me, if you've omitted any part of the question in your post, then that may explain as to why.

Feel free to re-post anything, ask for clarification if you need it. Ill try to help if/when I can.

[Abu Muhammad]

It was a question the lecturer asked. Jazakillahu Khairan