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hello random or zig-zag movement of collidal particle inside a solution is known as browian movement.it stabalize collidial particle. this is caused due to strike of dispersion medium molecues from all side.
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hello isoelectric point is a point where ph of sol. is so maintained that there is no movement of collide particle toward the charge plate.
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hello adsorption is surface phenomena while absorption is bulk phenomena i.e. occure throuout the surface while in adsorption molecues of adsorbent remain at the surface only,they cannot penetrate inside the surface.
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hello sulphide ion are arranged in fcc while zink ion occupies half of tetrahydral void.
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hello sp3d and sp3d in ist case 1 loan pair and 3 singal bond and 1 double bond. in second case 2 double bond and 3 singal bond.
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hello delta tb=kb*m .17=.51*m========>m=1/3 delta tf=kf*3 =1.86*1/3=.62 0-Tf=.62========>Tf=-.62 ans.
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hello we know that delta T=kb*m .4=.51*(5/M*100)*1000 now calclate M from here.
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hello this are the solution of two or more liqiod when does not change in their composition after distilation.i.e. same composition in liqiod and vapour phase.
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hello according to this law,the degree of dissociation increses with increse in dilution and it approch 1 when concentration tend to 0.
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hello maxwell ploted the graph between speed of molecues and fraction of molecues possesing that speed(dn/n). dn/n=(m/2*pie*k*T) 3/2 4(pie)v2 e-mv2/2kt dv
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hello in a gas there are large no. of molecues moving with different speed.the speed that is possed by most of molecues is known as most probable speed.vp=root(2rt/m) where t=temprature m=molar mass
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hello because the surface of conductor is like an equpotential surface and electric field is always perpendicular to an equpotential surface.
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hello it is a state whose energy lie between two consecutive energy of atom.a electrone can make transition to meta stable state from it's upper state without releasing energy.
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hello friction always try to keep v=wr now,on rear wheel we provide torque means w but not v,so friction act in forward direction. on front wheel,since acceleration is provided due to joint member hence to provide torque it act in backward direction.
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hello.......... TIME PERIOD = 2pi *root(m/k)............ T = 2*3.14* root(200*10^(-3))/80.......... T =.31s............
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hello......... time dilation is a phenomenon described by the theory of relativity.it can be illustrated by supposing that two ebservers are in motion relative to each other,and/or differently situated with regard to nearby gravitational masses .................
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hello........... it exists in five forms,four of which are crystalline and one is amorphous.all crystalline forms are very hard made up of clusters of B12 units,all crysatlline forms are black in appearance and chemically inert.howevrer it is attacked at high temperatuer by strong oxidising agents such as mixture of hot concentrated H2SO4 and HNO3........
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hello........... 1.determine the priorities of the four attached group from highest 1 to lowest 4.......... 2.draw the steering wheel...... 3.if the lowest priority group is behind the steering wheel,then this is the standard orientation.colockwise is R and counterclockwise is S........
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hello........... H3BO3 ON HEATING TO 100 DEGREE CELCIUS...........THA IS H3BO3-------------->HBO2............NOW AGAIN ON HEATING TO 160 DEGREE CELCIUS............ HBO2----------------->H2B4O7........AGAIN ON HEATING TO RED HEAT........... H2B4O7------------->B2O3............
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hello.......... 1.it is precipated by treating a concentrated solution of borax with sulphuric acid....... Na2B4O7 + H2SO4 +5H2O--------------->Na2SO4+4H3BO3...... 2.from colemanite:powered colemanite is suspended in water and excess SO2 is passed through it.on filtering and cooling,white crystals of H3BO3 are obtained......
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Vriti Edustore
