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Mathematics: Post your doubts here!
hey man, use this site will prepare u very well for the maths papers http://www.examsolutions.net/ -
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Chemistry paper11 mcq discussion.
IbtiCool whenever i add u it says "u r not allowed to start a convo with this guy" are u blocking that option ? -
Chemistry paper11 mcq discussion.
IbtiCool whenever i add u it says "u r not allowed to start a convo with this guy" are u blocking that option ? -
Chemistry paper11 mcq discussion.
do u guys know how to remove ppl from the chat? because i wanna add u but its full so i will remove all those who r not discussing and i will add u is there a way ? -
Chemistry paper11 mcq discussion.
yo the guy with spyro picture..how do we spell ur name i wanna add u lol ? whats the first letter l or i ? -
Chemistry paper11 mcq discussion.
hela we can't discuss the paper here and if mods notices they will lock the thread so its better to make a group and add all the paper 11 candidates to discuss the paper. -
Chemistry paper11 mcq discussion.
make a group and add us to discuss before i forget the questions! -
P1 MCQ's preparation thread for chemistry ONLY!!!!
it would be better if u post the links of the past papers!! -
P1 MCQ's preparation thread for chemistry ONLY!!!!
Q2. always remember that at a higher temperature the curve with the higher temperature will be more to the right of the curve of the lower temperature and will have a lower hump than the curve with the lower temperature so it is B Q4. again bond breaking is positive and bond forming is... -
P1 MCQ's preparation thread for chemistry ONLY!!!!
Q2. the equation will be Pb^4+ 2Br^- ----> Pb^2+ Br2 n(pbcl4) = 6.98/349 = 0.02 n(Br2) = 0.02 m(Br2) = 159.8x0.02 = 3.196 g ANSWER : C Q9. tricky question here! Ag is solid so it will not be included in our Kc expression at the beginning of the reaction we had 1 mol of both silver ions and... -
P1 MCQ's preparation thread for chemistry ONLY!!!!
foe question 15, first of all study the table and look at each anion reacting with each halogen gas. lets look at the X^-1 it can reduce both Y2 and Z2 ( very strong reducing agent) Y^-1 can't reduce none of them so it is obviously a very weak reducing agent z^-1 can only reduce Y2 and not X2... -
P1 MCQ's preparation thread for chemistry ONLY!!!!
these type of questions drive me crazy but i have learnt a formula which will be really helpful in these kind of questions it is Pi = (Ni/Nt ) x Pt Pi = pressure of the gas Ni = no of mole of the gas at equilibrium Nt = total no of moles of both gases at equilibrium Pt = total pressure now... -
P1 MCQ's preparation thread for chemistry ONLY!!!!
oh i just noticed the questions has been answered -_- my bad i was late :P sleeping :$ -
P1 MCQ's preparation thread for chemistry ONLY!!!!
Q2. D^-1 has 1 proton and 2 electrons(it has a negative charge so it has an extra electron 1+1=2) and 2-1 = 1 neutron so it can't be A H3O^+ has 3+8 = 11 protons and 3+7 (note there is a positive charge on the oxygen so instead of 8 electrons it will have 7) = 10 electrons and 8 neutrons. so it... -
P1 MCQ's preparation thread for chemistry ONLY!!!!
sure go ahead and ask! i will try my best to help u -
P1 MCQ's preparation thread for chemistry ONLY!!!!
i took phys last year but u r lucky that i take mechanics and i still remember this stuff :P anyway the answer is obviously A because the graph A shows the acceleration is constant and when the speed of the car is increasing uniformly it means that the acceleration of the car is constant and... -
P1 MCQ's preparation thread for chemistry ONLY!!!!
thanks i got it now!! -
P1 MCQ's preparation thread for chemistry ONLY!!!!
question 11, uk the haber process is an exothermic reaction so an increase in the temperature will shift the equilibrium position to the left and the yield of ammonia will be decreased N2 + 3H2 --> 2NH3 + heat u have less moles of products than reactants so an increase in the pressure will... -
P1 MCQ's preparation thread for chemistry ONLY!!!!
for question 4, you know that bond breaking is always endothermic (+) and bond forming is exothermic (-).. P is bond breaking and will have a value of +193..Q is bond forming so will have a value of -244. in R we formed one C-Cl bond so we will have a value of -340. In S we broke one C-H bond...