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A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass.calculate the mass % and % conc. of the resulting solution.

what is the difference betweem mass % and %concentration,when % concentration is taken (w/w)?

A solution containg ethyl alcohol and propyl alcohol gas a vapour pressure of 290 mm at 30 degree celcius .Find the vapour pressure of pure ethyl alcohol if its mole fraction in the solution is 0.65.The vapour pressurte of propyl alcohol is 210 mm at the same temperature.

please give me reply

One litre of water was added to 500 mL of 32% HNO₃ of density 1.2g/mL.What is the % concentration of HNO₃ in the solution obtained?

The molarity and molality of a solution are M and m respectively.If the molecular weight of the solute is M' ,calculate the density of the solutrion in terms of M , m and M'

Please explain the answer and the derivation

The phenomenon of returning of rays of light after striking the surface of the mirror is known as reflection of light. CLEAR or not ??????????

dy/dx=x²e^-3y,given that y=0 when x=0

A hollow sphere is released from the top of an inclined plane of inclination theta. what should be the minimum coefficient of friction between the sphere and the plane to prevent slidding .Also find the kinetic energy of the ball as it moves down a length L ON THE INCLINE IF THE FRICTION COEFFICIENT IS HALF THE VALUE CALCULETED IN PART A

Yes u r correct but please explain me all the steps involved in it.

A sphere starts rolling down an incline of inclination theta.Find the speed of its center when it has covered a distance L ?

A small spherical ball is released from a point at a height h on a rough track.Assuming that it does not slip anywhere , find its linear speed when it rolls on the horizontal part of the track?

For figure, please consult H.C.Verma page no. 200 problem no.--73

How is Algebra of K.C.Sinha and diff. calculas and trigonometry of arihant for purpose of IIT.

How is Algebra of K.C.Sinha and diff. calculas and trigonometry of arihant for purpose of IIT.

The initial horizontal velocity of the explosive will be equal to that of the plane but, right from the next moment,the explosive will deaccelerate due to -

(1)The air resistance

(2)Lack of an engine-power to maintain constant horizontal velocity.

As such the explosive will be lagging behind the plane instead of remaining continuously underneath it.

Please clear my doubt.