Messages posted by mal7152

at 10 degree C the osmotic pressure of urea solution is 500 mm. when the solution is diluted and temp is raised to 25 degree C then the osmotic pressure is found to be 105.3 mm. determine the extend of dilution

calculate molality of ethanol solution if mole fraction of ethanol is 0.05 and density is 0.997 g/cc

do u mean cis and trans??

if so then they are geometrical isomers found in alkene compounds.msg me if u require further info for the same topic

Compound A has a smell of bitter almond on reaction with NaOH gives B and C. B has formula C7H8O which on oxidation gives back compound A. C is a sodium salt of acid which on reaction with sodalime gives D. gives names and formula of A,B,C and D.

find out total number of atoms, ions and wt of sulphuric acid by dissolving 11.2 litre suplhur dioxide in water at STP

can any one help me to balance these redox reactionsAs2S3 + H2SO4 → H2AsO4-1 + SO2 ( acidic medium)Cu2S + SO4-2 → Cu+2 + SO2 ( acidic medium)

Two squares. one is 8 X 8 (area 64). Other is 13 X 5 (area 65).

We have four shapes that fit each area. Their spec are as follows:

Two triangles each: h=3, b=8. Area= bXh/2

Two trapezoids each: a=3, b=5, d=5. Area= [(a+b)/2] X d

Now. you position all four shapes on noth lots, they fit perfectly.

Question: Where did ONE centimeter come from?

sorry it is molality that needs to be found out

which is not the correct meaning of 30 ppm Ca+2a) 30µ gm Ca+2/ml b) 0.03 gm Ca+2 / litc) 30 mg Ca+2 / lit d) 0.3 gm Ca+2 / ml

density of 2.05M acetic acid solution is 1.02 gm/ml. molarity of solution is ___a) 1.14 b) 3.28 c) 2.28 d) 0.44

mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm at 300 K. vapour pressure of propyl alcohol is 200 mm. if mole fraction of ethyl alcohol is 0.6 its vapour pressure in mm at same temp will be ___a) 360 b) 350 c) 300 d) 700

the density in gm/lit of a 3.6M sulphuric acid solution ie 29% ( molar mass = 98 gm/mole) by mass will be ______a) 1.45 b) 1.64 c) 1.88 d) 1.22

can u explain how u get this answers

an aqueous solution of 6.3 gm oxalic acid dehydrate is made upto 250 ml . volume of 0.1N NaOH required to compeletely neutralize 10 ml of this solution is ___a) 40 ml b) 20 ml c) 10 ml d) 4 ml

If for a solution osmotic pressure is 0.0821 atm and temp is 300 K then concentration of solution in mol/lit is ____a) 0.33 b) 0.066 c) 0.003 d) 3

0.1 M NaCl and 0.1 M CH3COOH solutions are kept in a separate conatiners. If there osmotic pressure are P1 and P2 respectvely, then which is correct?a) P1> P2 b) P1 < P2 c) P1 = P2 d) P1 = P2 = 0 atm

1) 0.1 M NaCl and 0.1 M CH3COOH solutions are kept in a separate conatiners. If there osmotic pressure are P1 and P2 respectvely, then which is correct?a) P1> P2 b) P1 < P2 c) P1 = P2 d) P1 = P2 = 0 atm

1) 0.1 M NaCl and 0.1 M CH3COOH solutions are kept in a separate conatiners. If there osmotic pressure are P1 and P2 respectvely, then which is correct?a) P1> P2 b) P1 < P2 c) P1 = P2 d) P1 = P2 = 0 atm2) If for a solution osmotic pressure is 0.0821 atm and temp is 300 K then concentration of solution in mol/lit is ____a) 0.33 b) 0.066 c) 0.003 d) 33) an aqueous solution of 6.3 gm oxalic acid dehydrate is made upto 250 ml . volume of 0.1N NaOH required to compeletely neutralize 10 ml of this solution is ___a) 40 ml b) 20 ml c) 10 ml d) 4 ml

law of constant proportion, law of multiple proportiona and law of combinign weights are called as laws of chemical combination.

revert back to me if u have doubt in aany law, do rate me if useful

both are same only, it means that a Zn atom has lost two elsectrons.

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