sorry! i gave you the wrong explanation. if an equation has a reactant that is oxidised, the other will definitely be reduced. if one is present, the other is present too.
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IGCSE O/L student
svenas
thank u...
IGCSE O/L student
did u understand?
svenas
yea sure!! thanks!
IGCSE O/L student
plz don't thank me. just pray for me. i want 8A*s
svenas
surely I'll pray for u....
inshalla u will get 8 A*s
inshalla u will get 8 A*s
IGCSE O/L student
Aameen!
you too!!
you too!!
svenas
HELLO!
I was checking my physics paper 3 and the question which says energy conversion to other form I wrote a car accelerating..is it acceptable...in my book it's written like this....a car accelerating-----chemical to kinetic and heat...?
I was checking my physics paper 3 and the question which says energy conversion to other form I wrote a car accelerating..is it acceptable...in my book it's written like this....a car accelerating-----chemical to kinetic and heat...?
IGCSE O/L student
Hi!
i really don't know, but I wrote the change and then mentioned the change in brackets.
i really don't know, but I wrote the change and then mentioned the change in brackets.
svenas
I wrote the chane is chemical to kinetic (and heat)..not sure if i wrote heat...so is there problem if it converts to more than one form of energy??
IGCSE O/L student
no, i don't think it's a problem. insha allah, it won't be a problem.
svenas
Helloo!!
plz help me with this:http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_w05_qp_1.pdf
q35...
Thanks
plz help me with this:http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_w05_qp_1.pdf
q35...
Thanks
IGCSE O/L student
when they say "unsaturated", it means there is a double-bond between carbon atoms. so, B is the answer.
svenas
yea ryt thank u..I was confused between c but realised that also dey said hydrocarbon so only h and O...BTW thanks..
other question is this:http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_w06_qp_1.pdf
q11....anode I understood but cathode how come naoh???
other question is this:http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_w06_qp_1.pdf
q11....anode I understood but cathode how come naoh???
IGCSE O/L student
all the positive ions move towards the cathode, here sodium is more reactive, so it remains in the solution, so sodium hydroxide is formed at the cathode.
svenas
but why hydrogen not formed?
or it's formed and escape??
or it's formed and escape??
IGCSE O/L student
both are formed. but since you are sure chlorine is formed at the anode, you have no other choice.
svenas
Got one more question: http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_w07_qp_1.pdf
q11...really hard plz explain it to me in detail..thanksss!!!!
q11...really hard plz explain it to me in detail..thanksss!!!!
IGCSE O/L student
i think u forgot the oxygen atom in the hydrocarbon. i faced the same prob. use that oxygen atom too.
svenas
yea but still not confident in this question .......maybe the hardest one I faced really!!!
BTW thanks aloot for replying!
BTW thanks aloot for replying!