it can be seen in this way suppose i give u 10 crore u will not be stable u will be still wanting more

 

similarly though n have half filled conf but still have vacant p orbital & lone pair to donate dats why it participates

 

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its 2.16 since Agco3 is unstable it further decomposes to Ag & co2 so residue is 2Ag use stoiciometry we get moles of Ag\2= 2.76\276

 

hence weight Ag = 1.08*2=2.16

 

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dear devesh in think for colour remembering u must write  with colours that belongs to particular cpd for example for calcium gives brick red flame test just colour it with red  i know no. of others have red colour too but it will surely work out for u 40%

 

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2* (2sinxsin2x)sin4x

2cosxsin4x-2cos3xsin4x=sin3x

sin5x+sin3x-sin7x-sinx= sin3x

 

sin7x-sin5x=-sinx

2cos6xsinx=-sinx

 

cos6x= -1\2 = cos2pie\3

 

x= pie\9

 

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any thing which cant be explained with magnitude only is vector

for eg  suppose i ask u to close the door  u just cant apply same magnitude to close door always sumtimes u need little bit more so it depends on the position or direction of door thats wy force is vector quantity

 

this is the physical approach towards vectors

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you can directly convert it into halfof tangent & find out value of tanx\2

 

 

these r sinx = 2tan x/2  \ 1+tan ^2 x

 

cos2x = 1-tan^2 x \ 1+ tan^2 x

 

 

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u can write it as -(2npie-theta) this takes it to iv quad where sin is itself negative so -- & -- + thats why it becomes sin theta

 

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hi gunjan

as im also passing thru these circumstances i think that if u conc on ur coaching than school it will be very helpful  but remember dont ever miss ur school xams they r very beneficial

ans- is  41k/36

 

u can write [x] as x-{x}

since x belongs to integer fractional part is zero then it will come 36x= 41k

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u= infinity  so v focus but paraxial rays r hitting pole so it means focus n pole of mirror coincides so a very diminished image is formed

-v/u = 0 = magnification in diameter

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in my opinion   paula bruce for organic

hc verma & then ie irodov for further concept clearity & detail studyfor physics

 

arihant question papers will be sufficient to help u

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AT 3,5 CHARGE DENSITY IS MORE AFTER ONE SUBST SO DUE TO - I OF NO2 NO2 WILL ATTACK THAT PART ONLY

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