Messages posted by G3

can any1 help me ... what is erythro and threo form of a compound..

ex. wats the erythro form of 3-bromo-2-butanol ???

gr8 job.. really useful!

During Beta elimination(like dehydrohalogenation), that alkene is formed which has more no. of Methyl Substituents....

rate if useful...

gr8... cooolllll

vry useful wrk!

give a seperate thread for answers BUT after a few days.... we need to work those questions out...

A space shuttle is filled with Neon Gas at 1.00 atm and 290 K. The gas effuses through a pinhole in outer space at such a rate that the pressure drops by 0.30 torr/s .
(a)If the capsule were filled with ammonia at the same temperature and pressure, what would be the rate of pressure drop?
(b)If the capsule were filled with 30.0mol%HELIUM, 20 mol% OXYGEN and 50.0mol% Nitrogen at a total pressure of 1.00 atm and a temperature of 290 K what would be the corresponding rate of pressure drop?

plzzz explain how??

i will b very happy and thankful if u send it to gayathri1705@yahoo.co.in

How to find acidity (comparitive) for molecules such as these:

CH₃C

CH

CH₃CH=CH₂

CH₃CH₂CH₃

like how to arrance them in ascending order of acidity?

plz help.....

Hybridisation of carbon atoms in CH₃-C

C-CH_{3 is}

a) sp³ and sp²

b) sp³ and sp

c) sp² and sp

d) sp only

plzz reply.....

rates assured

can any 1 tell me the formulae (also structural) for :

2-methylbutyne

2,2-dimethylbutane

2,3-dimethylbutane

2-methylbutene

plz help me with the ans

The percentage ionic character of a compound AB is 20. Its dipole moment in 1.2 D . The bond length in metres is:

(a) 1.2 * 10^-10(b)1.25 * 10 ^-8 (c)25 * 10¹⁰ (d) 2*10^-10

Name a physical quantity which means Resistivity to change

r = 10 cm

the minute hand sweeps 6 degrees in 1 minute

i.e in 60 sec. it sweeps 6

/180 rad

so in 1 second it sweeps 6

/(180 *60)

=

/1800 rad/sec

v = r

therefore

v = 10 * (

/1800)

v =

/180 cm/s

[u²sin²

] / 2g is the formula for finding maximum ht reached by the projectile..

3m ht is not the max ht reached by projectile.. it has still more ht to reach..

the 3 m high wall may be present higher or lower than the max ht reached by the projectile..

i think in this case 3m is less than the max ht..

then how to solve??

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