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nice!!!!!

dhanyavad!.....its damn useful!!!!!!!!!!

its gud!

calculate energy required to convert all the atoms of Mg ions present in 24gms of Mg vapours?...first and second ionization enthalpies of Mg are 737.76 and 1450.73kJmol^-1 respectively.

sorry ppl..........its t/2 secs

a block slides down a smooth inclined plane to the ground when released at the top, in time t secs. another block is dropped vertically from the same point, in the absence of the incline plane and reaches the ground int/2 sec.then the angle on inclination with vertical is.....?????

the sulphate of metal M contains 9.87% of M. this sulphate is isomorphous with ZnSO₄ .7H₂O. deternine the atomic wt. of metal M.

proper explanation is expected

its gud.......

sinx>cosx
sinx/cosx>0
tanx>0
x>tan inverse

a stone is projected from the ground with a velocity of 25m/s. two secs later, it just clears a wall 5m high. find

a)angle of projection of stone

b)the gr8est height reached

c)hw far beyond the wall the stone aain hits the ground.

g=10m/sec²

0.24 g of volatile substance upon vapourization gives 45ml vapour at NTP. what will be the vapour density of the substance.

calculate total no. of electrons present in 1.6g of methane

_{[ ]}

^{[ ]} _{^cos4xcos7xdx}

the sulphate of metal M contains 9.87% of M. this sulphate is isomorphous with ZnSO₄ .7H₂O. deternine the atomic wt. of metal M.

proper explanation is expected