Biology; Chemistry; Physics: Post your doubts here!

[Ahsan Zafar]

would it be correct to state the concentration as 0.4 mol/dm3 instead of 0.39mol/dm3

 

[Qasim Hafeez]

How did your paper go guys?

 

[funky brat]

How did your paper go guys?

I'm not getting full marks.

 

[Jenn]

Okay, so in the question where we had to tick the right answer, I messed up a bit. Ticked an answer, cut it out and ticked the other one. Will that be marked? :/

 

[Ahsan Zafar]

You should have stated or made some distinction for the examiner to know which answer was correct. Like circling the right tick or something similar

 

[Qasim Hafeez]

I'm not getting full marks.

It's okay. but you guys are already scaring me. i have cie next year , inshallah.

 

[Jenn]

You should have stated or made some distinction for the examiner to know which answer was correct. Like circling the right tick or something similar

I did. Double ticked it. Wrote the answer individually near the question too. But I am not so sure, if they will consider it. :/

 

[Abdul Hanan]

I did. Double ticked it. Wrote the answer individually near the question too. But I am not so sure, if they will consider it. :/

they will, if it's clearly shown that you were not confused. and ticked the other by mistake.......

 

[Ahsan Zafar]

Dont worry bro, they assess your knowledge and these minor things wont matter. You ticked the correct answer in the end and that is enough for you to get the mark

 

[M.Omar]

would it be correct to state the concentration as 0.4 mol/dm3 instead of 0.39mol/dm3

Since the mole conc in question was 1.00 mol/dm^3 3 sig fig,wud it be acceptable to writ 0.393mol/dm^3(3 sig fig) .not 0.39 or 0.4?
THIS is a complementary question to the one abv

 

[Faiqa Ahmad]

I just got my second last 6 mark question wrong And. im not feeling good at all

The lead ore one?

 

[Ahsan Zafar]

What about the colour for silver bromide?

 

[Faiqa Ahmad]

Since the mole conc in question was 1.00 mol/dm^3 3 sig fig,wud it be acceptable to writ 0.393mol/dm^3(3 sig fig) .not 0.39 or 0.4?
THIS is a complementary question to the one abv

Which paper are you guys talking about? I gave paper 6 today.

 

[M.Omar]

Which paper are you guys talking about? I gave paper 6 today.

5070/42 may june 2014 Olevel

 

[Abdul Hanan]

Anyways,how did ur pprs go.Any new point in the ppr or any releatively tricky pts tht u found,do share
For me I don't know why but the ind MCQ took 5 min ! I reckon..Though the ans wer was c
The fractional distillation apparatus 4 marks ...Volatile alkanes....Any four solid pts tht shud be worth mentioning,do share
My pts:Condenser...water in water out ....thermometer..cork rubber bungs to connect condenser and adapter...Conical flask or receiving flask tripod stnd so tht heat frm Bunsen be applied IN A WATER BATH.Finally conical flask plced in ice cool container sio tht they do not evprte...Shud not be corked else pressure build up.
Just checking wht abt the 2 masses of AGBR in the initial questons
I think mine was 9.4 and 5.64(or sth like tht)

in distillation diagram i made the
-condenser
-beaker
-bungs
-thermometer
-electric heater
-water in and out
are these enough?

 

[M.Omar]

in distillation diagram i made the
-condenser
-beaker
-bungs
-thermometer
-electric heater
-water in and out
are these enough?

Yeah tht,s wht I wud like to know..But since it,s of 4 marks..I believe the essential are Thermometer.conical flask.condenser/water in water out..and finally a uitable way to heat up the solution....So I believe ur,s will gain full credit

 

[Fate0]

The answer for concentration is 0.393 in marking scheme. They might accept 0.40. Dont know
I drew, waterbath, bung, thermometer, condenser, water in and out and two distillate flasks.

 

[M.Omar]

The answer for concentration is 0.393 in marking scheme. They might accept 0.40. Dont know
I drew, waterbath, bung, thermometer, condenser, water in and out and two distillate flasks.

O yeah I remember I too drew a second conical flask in the corner
So the conc of 0.393 is correct...Woooo
Wht abt AGBR ones the 2 masses

 

[Ahsan Zafar]

o

5070/42 may june 2014 Olevel

off white?

 

[Fate0]

O yeah I remember I too drew a second conical flask in the corner
So the conc of 0.393 is correct...Woooo
Wht abt AGBR ones the 2 masses

AGBR? I think if it was the second question 1st mass was 3 something and and 2nd mass was 5 something i think.