got it! thankss )use all elements Ar given. Replace X using the elements given and find the mole ratio!
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got it! thankss )use all elements Ar given. Replace X using the elements given and find the mole ratio!
can someone pls explain to me question 12 october nov 2010 paper 13
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w10_qp_13.pdf
Some Doubts..
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s06_qp_1.pdfhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s06_ms_1.pdf
Questions 1 , 3 , 10
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s07_qp_1.pdfhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s07_ms_1.pdf Questions 8 , 9 , 26
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w07_qp_1.pdfhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w07_ms_1.pdf Questions 1, 9 , 10
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s08_qp_1.pdfhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s08_ms_1.pdf Questions 1,2,6,15,31
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w08_qp_1.pdfhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w08_ms_1.pdfQuestions 1,2,4,30
I know these are aloot in one go.. but i need help! =)
ur welcomegot it! thankss )
PLEASE HELP
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s08_qp_1.pdf Q6 C Q7 D Q26 C
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w08_qp_1.pdf Q 26 C
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w10_qp_12.pdf Q 8 D Q25 D
Oct 2010 - Q8 - Ca(S) --> Ca(g) is +177PLEASE HELP
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s08_qp_1.pdf Q6 C Q7 D Q26 C
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w08_qp_1.pdf Q 26 C
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w10_qp_12.pdf Q 8 D Q25 D
a and d have no dipole. CO2 is linear shaped and so both oxygen atoms cancel out. the same goes for option a. all chlorine molecules cancel eachothers polarity. in b only oxygen is electronegative and it gets -ve charge. in c also there is a dipole but weaker as the chlorine atoms form a -ve charge in the opposite direction so slightly reduce the overall dipole. Hence its b. Just think of it as forces acting at a point. If they act in the same direction the overal force is large. If they act in opposite directions then its lesscan someone tell me how to solve these type of questions ? question 4 oct/nov 2009 paper 12
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w09_qp_12.pdf
Lol even i didnt get it. Im confused between C and D. I just dont get why its D?!
can someone pls tell me how to do this?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w09_qp_11.pdf
question 2
You have to try with each one, write the BALANCED chemical equation, then check whether the mole ratios found give 0.2 mol of the hydrocarbon.
First find moles of CO2 and of H2O… à 35.2/44 =0.8 à Carbondioxide
14.4/18 =0.8à Water
Then,
C2H4 + 3O2 à 2CO2 + 2H2O , ratio of the hydrocarbon to CO2 is 1:2 , so this will give 0.4 mol of the hydrocarbon .
But if u try with C4H8 You will get a ratio of 1:4 which will give 0.2 mol of hydrocarbon
Please explain question number 8.
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s10_qp_11.pdf
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