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Chemistry: Post your doubts here!
alright see do uk the formula v1p1 = v2p2 ( we took that in IG physics) before we connect the flasks we have 2(1) + 2(1) = v2p2 ( v2p2 are the values of the volume and pressure of gasses after connecting the flasks) when we connect the flasks the volume (v2) will be 1+2 =3 so 2(1)+2(1) = 3p2... -
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Mathematics: Post your doubts here!
hey there! for 6 c(i) you need to find the ratio of the speed at the ground to the speed at B. we have the kinetic energy at both points. At B the kinetic energy is 1.6j and at the ground it will be 6j so 1/2mv^2 = 1.6 v = 4 ( this is the speed of the object at B) 1/2mv^2 = 6 v = √60 (... -
Mathematics: Post your doubts here!
use cosine rule A^2 = B^2 + C^2 -2BC.COS A A^2 = 8^2 + 8^2 -2(8)(8).cos 2.4 A = 14..9 -
Chemistry: Post your doubts here!
do u have to draw the carboxylic acid group in skeletal formula too or we can just add co2h ? -
Mathematics: Post your doubts here!
in integration limits r the values u put on the top of that sign ∫ and on the bottom of it -
Chemistry: Post your doubts here!
for 3ai and these type of questions u need to draw a cycle that will help u to determine the enthalpy change from the given values like this one for example to find H use vectors..like go against the left vector so u have to minus it then go with the right vector so u add it..did u get it ? i... -
Chemistry: Post your doubts here!
no anywhere u like it doesn't matter but dont forget if it asks u to show it displayed then u must show the bonds in CN and any functional group and u have to draw it in a 3D..i will look at the enthalpy question now for u -
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Mathematics: Post your doubts here!
nah thank you, i know how to do cross product..thanks again sooo much now i will think of the way u explained the question till i completely understand it! -
Mathematics: Post your doubts here!
i dont understand y did u find the cross product of d1 and d2..can u pls explain this part? -
Mathematics: Post your doubts here!
thanks..i am still trying to do it ow and failing to answer it arghh :/ -
Chemistry: Post your doubts here!
you need to know the common ones like copper, iron, sulphate carbonate and that stuff but not all of them -
Mathematics: Post your doubts here!
can someone pls explain to me question 11(ii) may june 2004 paper 3 mathematics http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s04_qp_3.pdf i would really appreciate it if someone could draw for me the diagram of that question -
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Chemo P5 tips
graduated boiling tubes?? where did u find such an info ? -
Chemistry: Post your doubts here!
fajan's rule is not in A2 too..never heard of it -
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Mathematics: Post your doubts here!
haha u want the hardest paper everrrr? then try 2012 may june 22..damn i did that paper in may june and i had to take math again because of its difficulty