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Please help me out! I need physics topical questions of A level paper 4. alevelforum is closed...
Please help me out! I need physics topical questions of A level paper 4. alevelforum is closed and mediashare link isn't also working- Raiyan3
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Chemistry: Post your doubts here!
Righttt i kinda get it noww! Thank you very much. May the best of the luck be with you 'Ayesha' :) -
Chemistry: Post your doubts here!
Can someone please thoroughly explain Question 5.a) http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w09_qp_42.pdf -
Information needed
Goodmorning! I gave my Physics As level from British council bangladesh. I wanted to know are candidates allowed to see their individual grade components? -
Physics: Post your doubts here!
Please explain why the answer to question no. 30 is C? http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w11_qp_11.pdf -
Poll :- Did You Recieve Far Lower Grades Than Expected
The GT for Maths As level say 61% is a B. I got 67%, grade C. Where am i wrong? -
Physics: Post your doubts here!
Can someone please explain 7(c) http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s05_qp_2.pdf -
How was Chemistry/12 ?
It was alright though. Some were easy some were hard. Though it was over all not that hard. Lets all hope for the best :) -
Chemistry: Post your doubts here!
Thankyou so much! I was just leaving for the examination center! Haha! Hope it goes well for you :) -
Chemistry: Post your doubts here!
okay its eating my head. How do we do this? question number 4 http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w11_qp_12.pdf -
Chemistry: Post your doubts here!
Hubbabubba looks like you have done w11 paper12. How did you do question number 4? :/ -
Chemistry: Post your doubts here!
Please help in question number 4 http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w11_qp_12.pdf -
Chemistry: Post your doubts here!
You see the total amount of limestone roasted is 1200 (1000+200) Now we make the equation CaCO3 => CaO + CO2 We find the moles of limestone = 1200/(40.1+12+ 16 x 3) = 11.98 Since the mole ratio of CaCO3:C02 is 1:1, we find the mass, we multiply by the mr of co2 which is 44. 11.9 x 44 = 527.47. Ans B -
Chemistry: Post your doubts here!
For question 23 "Ethene is half of the products. So there must be 2 ethene molecules and 1 propene and methane. 3+1+(2x2)=8. The compound that is cracked must contain 8 carbons." For question 33. Option number 2 is wrong because that is the wrong equation. Because pV=nRT (n=moles) not pV=MRT... -
Chemistry: Post your doubts here!
A Ahaa that is an awesome method aswell. Thanks a bunch hubbabubba *too cool to tag names* ;) -
Chemistry: Post your doubts here!
Righttt i understood the process but how do we know its Al4C3? :/ -
Chemistry: Post your doubts here!
"Question number 11 please http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_s11_qp_12.pdf " -
Chemistry: Post your doubts here!
You have to use bond engeries. Since N2 and O2 bonds were broken they are endothermic. And NO bond was formed so exothermic. =>(N2+O2)-2no=+180 =>(994+496) - 2No= +180 Solve it and you shall find the value of NO -
Chemistry: Post your doubts here!
Question number 11 please http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s11_qp_12.pdf -
Chemistry: Post your doubts here!
Rightttt Thanks alot buddy! That really did help buddyy!