The Official ‘O Levels’ Thread

Sidebar Sidebar
AsadAbrar

AsadAbrar

PG's Original Coolboy \m/
Aug 27, 2009
5,451
0
41
27
Lahore
The Official ‘O Levels’ Thread.

shahzadfootball said:
I successfully did question 2,i got frustrated for a moment and was like omg omg what is this aahhhhh but den I drank some water,relaxed and cooled down and my mind started working and den my principle's words into my mind that i shud concentrate on the keywords..I think one shud not study from past paper..I'm so lucky that today in the morning i just casually read about last chapters of prophet ...guys please edit ur post so that they don't talk abt question of paper !!!!!!

- - - Updated - - -



This qestion of mine went good...I did 3rd part and 4th part,i was thinking 15 mins before that i shud have done 5th part instead of 3rd but i had no time :p my 4th and second went great ! but 3rd one,i was not that satisfied although my isl teacher said that i wrote most of the points ...but i still feel as if i shud have done the 5th part instead xD

- - - Updated - - -

btw guys ,can u tell me about those colour indicators and their colour change upon diff reactions ..i have chem atp tomorrow along with mcq and math 2
Click to expand...
I did Q4 and Q5. They were pretty easy.


Sent from my iPod touch using Tapatalk
 
Xerolt9

Xerolt9

Catharsis ლ(ಠ益ಠ)ლ
Apr 1, 2011
1,967
0
41
Mordor
[MENTION=25983]AbbY[/MENTION]: Since you're good at moles:

Lets assume that the moles of Sulphuric acid used in an experiment were 0.025.

H2SO4 + 2NaOH = Na2SO4 + H2O

What would be the moles of Sodium Hydroxide then?

It should be 0.5, right? Since 1 mole of H2SO4 reacts with 2 moles of Sodium Hydroxide.

But I don't get why. According to my logic, it should be 0.0125.
 
Enferno

Enferno

PG Xtremist
Sep 7, 2010
704
0
21
karachi
AbbY said:
No answers before 24 hours after the exam passes !
Click to expand...
OKAY man......

- - - Updated - - -

Xerolt9 said:
@AbbY: Since you're good at moles:

Lets assume that the moles of Sulphuric acid used in an experiment were 0.025.

H2SO4 + 2NaOH = Na2SO4 + H2O

What would be the moles of Sodium Hydroxide then?

It should be 0.5, right? Since 1 mole of H2SO4 reacts with 2 moles of Sodium Hydroxide.

But I don't get why. According to my logic, it should be 0.0125.
Click to expand...
Code: 
H2SO4                      NAOH
1                             2

0.025                        [I]X[/I]


1 * [I]X[/I]= 2 *0.025
therefore

X=0.5
 
AbbY

AbbY

Administrator
ADMIN
Nov 20, 2008
6,405
85
54
Ankara
Xerolt9 said:
[MENTION=25983]AbbY[/MENTION]: Since you're good at moles:

Lets assume that the moles of Sulphuric acid used in an experiment were 0.025.

H2SO4 + 2NaOH = Na2SO4 + H2O

What would be the moles of Sodium Hydroxide then?

It should be 0.5, right? Since 1 mole of H2SO4 reacts with 2 moles of Sodium Hydroxide.

But I don't get why. According to my logic, it should be 0.0125.
Click to expand...
What Enferno said.

If 1 mole reacts with 2 moles,
x mole will react with 2x moles
and hence 0.025 will react with 0.025(2) moles.

I use the cross multiplication approach though. Simplifies things.

The answer should be 0.05 though. Verify the answer again.
 
shahzadfootball

shahzadfootball

#InNaNowWeTrust
Jun 11, 2010
1,008
1
44
Wadiya
[MENTION=25983]AbbY[/MENTION] your solution is that thinking one or u used the ratio formula

1:2=0.025:x
1/2=0.025/x
2(o.o25)=x
x=0.05 are the moles of 2NaHo used :D :bdance:
 
Xerolt9

Xerolt9

Catharsis ლ(ಠ益ಠ)ლ
Apr 1, 2011
1,967
0
41
Mordor
Yeah, it's 0.05.

I use the cross multiplication thing too. It makes things very easy. I guess I just made an error there.

Thanks Abby, Enferno and Shahzad.
 
AbbY

AbbY

Administrator
ADMIN
Nov 20, 2008
6,405
85
54
Ankara
shahzadfootball said:
[MENTION=25983]AbbY[/MENTION] your solution is that thinking one or u used the ratio formula

1:2=0.025:x
1/2=0.025/x
2(o.o25)=x
x=0.05 are the moles of 2NaHo used :D :bdance:
Click to expand...
I can solve moles in my mine apart from the calculation part but it's always best to write it down.
 
Xerolt9

Xerolt9

Catharsis ლ(ಠ益ಠ)ლ
Apr 1, 2011
1,967
0
41
Mordor
Ugh, Physics ATP tomorrow. I've never understood what to do for Physics ATP. I've never gotten a bad grade, but I have a bad feeling about this.
 
Xerolt9

Xerolt9

Catharsis ლ(ಠ益ಠ)ლ
Apr 1, 2011
1,967
0
41
Mordor
GCE O levels ._.

I've never really understood the difference between the two though.
 
AsadAbrar

AsadAbrar

PG's Original Coolboy \m/
Aug 27, 2009
5,451
0
41
27
Lahore
The Official ‘O Levels’ Thread.

I did 1,2 and 3 too.

But I couldn't time it well and was mid way in the c part of the last question when the time ended. :(

But, the questions I did went really well so I'm still hoping for an A in history.


Sent from my iPod touch using Tapatalk
 
You must log in or register to reply here.

New posts

General chit-chat
Help Users
We have disabled traderscore and are working on a fix. There was a bug with the plugin | Click for Discord
  • No one is chatting at the moment.
  • Necrokiller Necrokiller:
    The only valid thing from his pov he said in the video is AC dead since Black Flag. According to woke police that game was woke too. Welsh man in West Indies. So atleast he's consistent I guess lol
    Link
  • XPremiuM XPremiuM:
    Link
  • XPremiuM XPremiuM:
    Necrokiller said:
    It's based on an actual real life person so I don't think the woke police have a valid case here.
    Click to expand...
    Nope. They have a very valid case. The above video explains it all.
    Link
  • Necrokiller Necrokiller:
    It's based on an actual real life person so I don't think the woke police have a valid case here.
    • Like
    Reactions: SolitarySoldier
    Link
  • XPremiuM XPremiuM:
    Meanwhile Ghost of Tsushima PC version is out now. Looks 100 times better than ASS Creed already.
    Link
  • XPremiuM XPremiuM:
    Did y'all see the new Assassin's Creed trailer? They finally made a AC set in Japan & then they put a negro as the male protagonist. Ubisoft is taking cues from Disney, and it isn't gonna end well for them, just like Disney. Go woke, go broke!
    Link
  • Necrokiller Necrokiller:
    First Fallout 4 update and now this 🤡
    Link
  • Necrokiller Necrokiller:
    MS and Bethesda continuing their streak of massive Ls 😬
    Link
  • Necrokiller Necrokiller:
    Link
  • funky funky:
    Hello
    Link
  • NaNoW NaNoW:
    by closing down good studios
    Link
  • NaNoW NaNoW:
    well he is breaking barriers
    • Like
    Reactions: KetchupBiryani
    Link
  • iampasha iampasha:
    SolitarySoldier said:
    Phil keeps talking about breaking barriers to gaming, making it accessible on all platforms yada yada, while killing competition and creativity at the same time. the fact that i actually believed him for a second lol
    Click to expand...
    guys the biggest yapper in the Industry right now. All he do is yap
    Link
  • Necrokiller Necrokiller:
    Phil should be held responsible for this shitfest too, just like Sarah, but it's highly likely that these decisions are coming from Satya. And this isn't even the end of it. More closures are coming.
    Link
  • SolitarySoldier SolitarySoldier:
    if we are moving towards more and more popular trash across platforms that make billions for companies, I'm happy with all the barriers and exclusivity because at least that brings some pressure to create good stuff.
    Link
  • SolitarySoldier SolitarySoldier:
    Phil keeps talking about breaking barriers to gaming, making it accessible on all platforms yada yada, while killing competition and creativity at the same time. the fact that i actually believed him for a second lol
    Link
  • SolitarySoldier SolitarySoldier:
    "These changes are not a reflection of the creativity and skill of the talented individuals at these teams or the risks they took to try new things" ... seems to me that's exactly what it is
    Link
  • SolitarySoldier SolitarySoldier:
    why make good games when u can just buy everyone and shut them down lol
    Link
  • XPremiuM XPremiuM:
    I'm gonna say one last time, F*** Microsoft to infinity!
    Link
  • XPremiuM XPremiuM:
    Microsoft deserves all the hate they can get. Seriously i can't explain how much i want to curse them out.
    Link
  • XPremiuM XPremiuM:
    They could've sold the studios instead of closing them, but the nazi bastards just didn't want competition down the road.
    Link
  • XPremiuM XPremiuM:
    https://www.thegamer.com/real-reaso... a studio,owned can become viable competition.
    Link
  • XPremiuM XPremiuM:
    F*** Microsoft, and F*** their fanboys.
    Link
  • XPremiuM XPremiuM:
    What's the f*** is wrong with them? I mean really? Have they completely lost it? F***ing retards.
    Link
  • XPremiuM XPremiuM:
    So i just found out that f***ing s***bag Microsoft shut down Arkane Studio (makers of the brilliant Dishonored series) and Tango Gameworks (makers of the iconic The Evil Within series), among some other studios. I just want to say a giant F*** Y**! to Microsoft. THEY'VE F***ED UP BIG TIME this time.
    Link
    Necrokiller Necrokiller: The only valid thing from his pov he said in the video is AC dead since Black Flag. According to...
    Top Bottom