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although cholrine is electron withdrawing groupyet it is ortho nd para directing in electrophilic aromatic substitution reactantswhysolution halogens
calculate the free energy change of following reaction at298 kelvin h2i22hi if the enthalpy change is 518816kj and the entropy change is 16615j is
why rate of reaction in zero order is independent of concentrationsolution where r is the reaction rate and k is the reaction rate coefficient with
caco3 caoco2if cao is added externally what will be the changewill fwd reaction inc or backward reaction incand why solution backward
penta valent element has one electron more than 4 electrons which could be used for conduction while the trivalent elements has 1 electron less
board spectrum antibiotics are effective against several diff types of harmful bacteria ex
to perform the specific biological func for the normal maintenance of optium growthand
it is the difference among potential at two points of a conductor please note that by potentialat a point a we actually mean potential difference
if i worked 7 13 hours and planted 11 trees how many hours did it take to plant each
two indiana state senate candidates must decide which city to visit the day before the november election the same four cities are available for both
while taking readings in a deflection magnetometer the deflection should be between 30 degree and 60
your friend has gifted an earphone set to you while music is on you will try to oppose the two ear phone pieces to attract task-i will they
what is the name of this complex br2pts me2ptbr2 and what is the formula of this compound pentamminecrbonato cobaltiii
respected mamsir please tell me the detailed inforamtion about lubricant in metal
a particle with charge q and mass m is shot with ke k into the region between two platesif magnetic field between plates is bhow large b must be if
two persons a and b agree to meet at a place btween 11 to 12 noon the first one toarrive waits for 20 min and then leave if the time of thir
emission spectrum of hidrogen is different from emission spectrum of sodiumwhyans because in sodium atom there are already many other electrons
draw a tangent on the lens where you want to find normal then line perpendicular to tangent gives normal at that
if roots of x-px-q c are a and bwhat will be the roots of x-ax-b -c please explainsolution x-px-qcx2-pqx-c0hence
at a distance of 4000 ft from the launch site a spectator is observing a rocket being launched if the rocket lifts off vertically and is rising at a
alkane is a organic compound which having single bond between c-c ie alkane is a saturated
lhscos 12cos 60cos 84cos 12cos 84cos 60cos 122cos 72 cos 1212sin 18cos 1212radic5 -14cos 121radic5 -12cos 12radic5 12cos 12 rhscos 48cos 242cos
a simple pendulum of frequency f has a metal bobif the bob us negatively charged and is allowed to oscillate with a posively charged plate under it
the internal energy change when a system goes from state a to b is 40 kjmole if the system goes from a to b by a reversible path and returns to state
a particle executes linear some with an amplitude if 2 cmwhen the particle is at 1cm from the mean position the magnitude of its velocity is equal to