Messages posted by chemicaltester

Graphics for Funny Picture Comments
heee

now the name of this site should be changed
goguysgogal.com
yeh kua hai bhai
padhi karo ya......................

why to waste time saying girls are .....................
and guys are boooooooo
bang man
????????

kuch zadha hi srious ho gaya
cool maan . how can shinchan fan read this ???

heheheheheheheheh
any ways rating u a hat

now seee
ph is nothing but negative of log of h + ions
the minum ph can be 14 if h+ ions is 10^-14
if the temprature is increased this product increses
but if we decrease tbe temp the ionic product decreses
so , the ph can be 15 .16 at certain lower temprature than 298k
so if we decreses temp like till 30k or something like that
we can do it
but the ph can never be less than zero

1 murgi 2 ando deti hai
2 ende me se 2 murgi
so 1=3
3 murgiya 6 ande degi
to that makes 9 murgiya
9 se 18
18 se 36
36 se

se

72
72 se 144

aaaaa goiit pe ande count karne aaye ho kya 1=2 proove karne aaye ho!!!!!

he hehehehe lol lol lol lol lol lol lol lol lol lol lol lol

Mesons are intermediate mass particles which are made up of a quark-antiquark pair
Mesons are bosons too
now u would say what are quark and anti quark
Quarks are the building blocks which build up matter, i.e., they are seen as the "elementary particles".there are six lavor of quarks
Quarks are observed to occur only in combinations of two quarks wjich is meson

if u still dont understood go to wikipedia
rate me if u understood or nudge me if u dont

1)the total energy radiated per unit surface area of a black body in unit time is proportional to the fourth power of the temperature in kelvin.
here the constant of proprtionality is stefans constant
its value is5.670400×10?8 W·m-2·K-4

3)there is an inverse relationship between the wavelength of the peak of the emission of a black body and its temperature.
here the constant of proprtionality is weins constant such that
max wavelength =b/t where b is constant

2)A heat current is a kinetic exchange rate between molecules, relative to the material in which the kinesis occurs. A specific pattern of collisions among molecules, similar to a river bed effect on the direction of water travelling therein. (taken from wikipedia)
value of b is 2.897768 5(51) × 106 nm K.

2)

wht is bansal , fit jee
i just know resonance of physics and chemistry

a godd score in aieee
hmmmmmm
how about 360 from 360 or 540 from it
i know this score are good
with this u can kick the door of any college or university for ur admission

the answer is both a and b
its nucleophilic substituion of tertiary alky bromide
while it is electrophilic substitution of aq koh

i am waiting for this problem from week
do solve this please
bacche ki jann loge kya!!!

solution pressure i.e vapor pressure has no relation with gravity( u can neglect the effect of gravity on gas molecule)
also when current is passed the no of ions increases and hence vapor pressure increases

when solution is stirred vigorously k.e of molecules increases as a result the tendency to go in vapor is satisfied easily so vapor pressure increases .also by stirring the surface area increases so much more surface area is available for molecule to go in vapor form

i cannot solve complete problem cos it is too lengthy to write
but use shift of origin in such way that the vertex comes at the new origin in that then find focii using focus is(+- ae ,o)

trial and error method the best one
if for boards the use Row transformation wiz better than coloumn transformation

naaa
u r wrong buddy
qrs complex suggest the spread of IMPULSE OF CONTRACTION FROM av to sa node
see below what i found in wiki

P wave

During normal atrial depolarization, the main electrical vector is directed from the SA node towards the AV node, and spreads from the right atrium to the left atrium This turns into the P wave on the ECG, which is upright in II, III, and aVF and inverted in a VR . A P wave must be upright in leads II and aVF and inverted in lead aVR to designate a cardiac rhythm as Sinus Rhythm.

PR interval

The PR interval is measured from the beginning of the P wave to the beginning of the QRS complex. It is usually 120 to 200 ms long.

QRS complex

The QRS comlex is a structure on the ECG that corresponds to the depolarization of the ventricles. Because the ventricles contain more muscle mass than the atria, the QRS complex is larger than the P wave. In addition, because the His/Purkinje system coordinates the depolarization of the ventricles, the QRS complex tends to look "spiked" rather than rounded due to the increase in conduction velocity. A normal QRS complex is 0.06 to 0.10 sec in duration represented by three small squares or less, but any abnormality of conduction takes longer, and causes widened QRS complexes.

Not every QRS complex contains a Q wave, an R wave, and an S wave. By convention, any combination of these waves can be referred to as a QRS complex.

RT segment

The RT segment connects the QRS complex and the T wave and has a duration of 0.08 to 0.12 sec. It starts at the J point and ends at the beginning of the T wave. However, since it is usually difficult to determine exactly where the ST segment ends and the T wave begins, the relationship between the RT segment and T wave should be examined together. The typical RT segment duration is usually around 0.08 sec

T wave

it represents the repolarization (or recovery) of the ventricles. The interval from the beginning of the QRS complex to the apex of the T wave is referred to as the absolute refractory period.

for diagram

http://upload.wikimedia.org/wikipedia/commons/9/9e/SinusRhythmLabels.svg

paulis exclusion pricipe does not allow this
also the speed of electron is same greater than speed of light which contradicts einstien words that nothing can be faster than light
also there is no angular momentum of electron which supports principle quantum no of nucleus

to find length of chord on y axis
put x = -0 in equatioon
u will find a quadratic eqntion in y
i.e
y^2 -7y +12 =0
hence y=3 or 4
so distance between two point on chord is 1 unit

nothing
according to classical concept it means as relative change in function when it changes by a very very small thing
i.e
f(x+h) -f(x)/h
itss limit gives the functions derivative

Alcohols will react with Thionyl Chloride to produce alkyl halides. The reaction involves a nucleophilic attack of the alcohol on a Thionyl Chloride molecule displacing one of the Chlorides. Then the chloride will act as the nucleophile in a second step and displace the Oxygen from the carbinol carbon

The HOSOCl decomposes into gaseous Sulfur Dioxide and Hydrogen Chloride.

do want mechanism of production of alkyl halide from thionyl and alcohol??

these is problem of all student
they say that i get hammereed by the pressure of schools boards and blaa blaa
but if wanna dream then just it
i think u would be the only one to be at bed till 11
get up at 8 o clock
three hours for study
u r in xi
still 3 hours a day (although not good enough) but are quiet sufficient if u study sincerely nad see what happns

P wave

RT segment

T wave

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