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*Image* Please explain with mechanism( i need it within 2 hrs) ...

*Image* calculate the heat absorbed by a system in going through the cyclic process shown in fig. ...

two spheres of same size are made of the same material but one is solid and the other is hollow. They r heated to same temp.Which will expand more, if not why? ...

Q 2.5 mL of 2/5M weak mono acidic base (Kb = 1 × 10–12 at 25°C) is titrated with 2/15 M HCl in water at 25°C. The concentration of H+ at equivalence point is (Kw = 1 × 10–14 at 25°C) (A) 3.7 × 10–13 M (B) 3.2 × 1 ...

Q 1. In a triangle ABC , the in centre is the middle point of the median AD , then cos A has the value A. 7/8 B. 1/4 C. 1/3 D. 1/√2 ...

75 g of a metal combines with 24 g of Oxygen to form metal oxide, find the equivalent weight & molecular weight of the metal. ...

How much (volume) of 0.001 M HCl(aq.) should be added to 10cm3 of 0.001 M NaOH to change its pH by one unit? ...

Q.1 Find the % of H+ from water at 250C in 0.1 M CH3COOH take Ka of acid as 10-4 Kw=10-14 and volume = 1L. (Give complete soln.) ...

If a refrigerator's door is kept open, then the room will be (a)cooled (b)heated (c)no effect please explain the answer ...

The vapour pressure of a solution of 9 g of non-electrolyte in 18 g of water at particular temperature is 2250 N m-2. The vapour pressure of pure water at that temperature is 3000 N m-2. The molecular weight of the solute is. ...

1. 0.1 mole of CH3NH2(kb=5*10-4) is mixed with 0.08 mole of HCl and diluted to 1 L.What wil b the H+ concentration in solution? a. 8*10^-2 b. 8*10^-11 c. 1.6 *10^-11 d. 8*10^-5 ...

what are confirmatory tests for detection of Ag+,Ca2+ and Mg2+????? ...

how many of you havent recieved the aieee admit card till now... ...

For what values of λ does the function f (x)=(λ+2)x3−3λx2+9λx−1 decrease for all x? ...

express in polar form 1.1 +itanA 2.tanA-i 3.1-sinA+icosA ...

*Image* a mass of 8g of oxygen at the pressure one atmosphere and at temp. 27°C is enclosed in a cylinder fitted with a frictionless piston.the following operations are performsd: I-the gas is heated at constant pressure to ...

Wat's da the formula connectin various degreees of freedom (viz. Trans Rot. and Vib.) with Cv ? [7] [7] ...

great ppl have said this in the past, that self motivation is one of the key things for success... with IITJEE 2009 jus a day away, i know a lot of us wud be feeling jittery, nervous, thinking about the D-Day... but ill tell ...

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in d circuit shown in figure , switch S1&S2 open. find Va-Vb ...

i simply dont understand why now i am not able to solve this one............ i id it a few months back but now i cant get it........ plzzzzzzzz help me..its urgent............... a container of square base (2*2 m) height 4m i ...

*Image* find d emf[V] & internal resistance [r] of a single battery which is equilant to a parallel combination of 2 batteries of emf's v1 &v2 & internal resistances r1 &r2 resply with polarities as shown in fig ...

d locus of middle points of chords of d parabola y2 =4ax which r such dat d normals at their xtremities meet on d parabola is ...

*Image* a smooth ring P of mass m can slide on a fixed horizontal rod....a string tied to the ring passes over a fixed pulley and carries a block of mass m/2 as shown....at an instant the string between the ring and the pulle ...

the vapour pressure of liquid water us 19 torr at 27 degre by wat factor does d molarvolume of water increases as it vaporuise to form an ideal ga under thses conditions as compared to original volume in liquid state ...

*Image* all the plates hv been given the indicated charges.find the charge n left side of plate with charge q a)-8q b)9q c)0 d)none andplease not just options give a propr solution ...

let fbe a linear function satisfying f(1)<=f(2) f(3)>=f(4) f(5)=5 then a)f(0)<0 b)f(0)=0 c)f(1)<f(0)<f(-1) d)f(0)=5 ...

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whih showz both of em ? defeckts ? AgCl AgBr NaCl NaBr ? ...