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Mathematics: Post your doubts here!
alright ! i hate complex questions arghh.. -
A2 |Chemistry Mass Spectrometry Doubt(9701/42/O/N/12)
alright bro..it is said that the m/e of M is 88 this means its molecular formula (Mr) of the organic compound. lets calculate the carbon atoms present in the organic compound (1/1.1 x 0.22/5.1)x100 .. this is a formula which u need to learn and the answer will be 4 so we have 4 carbons present... -
Mathematics: Post your doubts here!
one question..isn't the shading of arg z < -1/4pi should be below the line and not above it ? -
Chemistry Paper 4-theory- doubts =D
thanksss i am glad i helped hehe ! -
Mathematics: Post your doubts here!
how can i solve question 10 omggg! someone pls help http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s12_qp_33.pdf -
Chemistry Paper 4-theory- doubts =D
the final question!! this one u will not need to use the n+1 rule since there is no splitting so u can say "yaay" no confusing shit in the question..anyway lets look at the peaks! first peak at 3.8 approx. has 3 hydrogen protons present in it looking in the data booklet is can be R-O-CH3... -
Chemistry Paper 4-theory- doubts =D
for the second question u have posted.. its the same scenario. first u will see how many hydrogen protons available on each type of proton from the number given at the top of each peak and then u look at the splitting of the peak..from the splitting u will be able to know what is the adjacent... -
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Chemistry Paper 4-theory- doubts =D
thanksss pray for me pls :) i am solving the other 2 now ! -
Chemistry Paper 4-theory- doubts =D
i will talk about the first question u have posted b) first of all u try to identify the type of proton on each peak.. the numbers on the top of the peak tells u how many hydrogen proton is present in the type of proton..and i believe u do have a data booklet so u can check how the type of... -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
YUUUCKKKK bio is the worst ever -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
wow a video is worth a trilliooonnn of words and god weird stuff happen in our bodies :O:O -
Chemistry Paper 4-theory- doubts =D
questions of this type is really annoying because it takes a lot of time to figure out the fragment by trying to multiply the atoms with each other till u get the given Mr so its a big waste of time i see. i would suggest that if a question of this type came in the exam, leave it to the last... -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
too much info!! but helpful after all thanksssss -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
my question is what actually happens so that the sodium ion channel opens. i don't understand what is "when the cell stimulates" the sodium ion channel opens. what do they mean by that? can u tell me what exactly happens so that the sodium channel opens ? thanks in advance! -
Mathematics: Post your doubts here!
karim in math every question will include every part of the syllabus..nothing will be missed in math all the chapters in the book will be involved in the questions. like literally every chapter!! -
Chemistry and Physics some Keypoints/Notepoints (onDemandOnly) !! :)
naahhh i actually hate bio (teacher made me hate it) and i got a U in it. it's a chemistry part..in the topic of metals used in biological system and 2 of them are the sodium and potassium ion involved in the cell membran ion transfer stuff -