Physics, Chemistry and Biology: Post your doubts here!

[skyangel]

And as for your question I'd say Practice you'll get used to it....eventually.

if i dont know how to how can i do it again

ahhh i hate exam ]=

 

[My Name]

if i dont know how to how can i do it again

ahhh i hate exam ]=

Just try In Sha Allah you'll do it! ^_^
Everyone feels that once in a while just remember after this you party all summer.

 

[skyangel]

Just try In Sha Allah you'll do it! ^_^
Everyone feels that once in a while just remember after this you party all summer.

lol feeling exciting going to my country pakistan so im more excited to meeet my friends and cousins

hahahahha cant w8

 

[My Name]

lol feeling exciting going to my country pakistan so im more excited to meeet my friends and cousins

hahahahha cant w8

For now keep your excitement for Summer down and your will power for getting A*s high
Best of Luck!

 

[skyangel]

For now keep your excitement for Summer down and your will power for getting A*s high
Best of Luck!

lol ok u 2

 

[masterex567]

If Reduction happens at the cathode... how is it that electrons flow TO the positive terminal??

Remember OIL RIG. Reduction is gain of electrons.
Hence if at the cathode, electrons are gained, they will flow from the cathode towards the anode ( which is the positive terminal ) .

 

[Kiara P.]

What's cystic fibrosis ?

 

[LONKBUCH]

What's cystic fibrosis ?

It's a genetic disease where the lungs of a person that has it, make mucus that is much thicker/more viscous than normal, causing bad effects, like getting stuck in the airways, blocking them, and being a good home/breeding ground for bacteria causing infections, and other effects.

 

[sj0007]

If the cations gained the electrons how can they go to the anode?

Do they flow to the anode??
Where does this happen??

 

[Kiara P.]

It's a genetic disease where the lungs of a person that has it, make mucus that is much thicker/more viscous than normal, causing bad effects, like getting stuck in the airways, blocking them, and being a good home/breeding ground for bacteria causing infections, and other effects.

Thanks Buddy :') !!

 

[sj0007]

They do right? ..in electrolysis

Wait........isnt it like at the anode, oxidation happens (loss of electrons) and then these flow to the cathode where reduction happens?
Its like from positve terminal to negative terminal......................am I right?

 

[sj0007]

So you are saying that electrons flow from the anode to cathode?
I think electrons flow from the negative terminal to the positive, of a battery... I have no idea really

Yes, the flow that u r talking abt is in the cell
In electrolysis, the electrons flow from anode to cathode.........
Do correct me if I am wrong...

 

[Ahmed Elsiddig]

Umm in what year???

may june 2014 variant 1

 

[Ahmed Elsiddig]

Assalam-o-Alaikum.
Post your Physics, Chemistry and Biology doubts in here and members, along with me will try their best to help you out.

Do u have any idea what the minimum A* mark usually is

 

[linda ali]

Hello Everyone.
My question is regarding Chemistry, I have passed earlier to a question found in Paper 11 O/N 2011 Question 11. The Idea there had stated that Sodium was the metal that CANNOT be used in electroplating by using an Aqueous solution.Why is it sodium? Why couldn't it be Silver? Is it because it would react or it has a more reactivity in the reactivity series.

Just wanted to double check
Thanks you in advance,

Yes its due to the sodium's high reactivity

 

[linda ali]

Hello Everyone
My question is about physics
paper: 0625/61/O/N/12
Question: 1 (c)
In part (b) I got 210 (which is correct) and when I tried to use it in the equation mentioned in part (c) I got the answers:
11, 19, 31, 39, 50
while the correct answers are:
1, 9, 21, 29, 40

Thanks

Guys help me out please this question drove me crazy :|!

 

[sj0007]

Do u have any idea what the minimum A* mark usually is

The minimum minimum margin for all the three subjects is usually about 30 marks (like losing 30 marks)

 

[My Name]

In bio p6, when they ask us to make a large labelled drawing of an organism, to what magnification do they expect us to draw?

No specific magnification try to cover up the space provided, don't over do it and also don't leave half the place blank!
Make sure your labels are neat and no sketchy lines or shading.

 

[My Name]

Guys help me out please this question drove me crazy :|!

I tried,but myself couldn't get it. :/
Don't waste your time, go on and do other papers and different variants.

 

[My Name]

In ON2013 61, question 1c, there is a range for the magnification. So..

What does it say? Link?