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ionic

How much solid Na2S2O3 should be added to 1.0 L of water so that 0.0005 mol Cd (OH2) could just barely dissolve?K1 and K2 for S2O3-- complexation with Cd++ are 8.3 × 10^3 and 2.5 × 10^2, respectively. Ksp (Cd(OH)2 = 4.5 × 10–15 ques in case photo is not clear...
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Haloalkane

Shouldn't there be ring expansion ?
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COM Probelm

in this question nothing is mentioned about where is rod is rotating
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String Constraint NLM Physics

A block agar x1 neeche jaa tha hai to l3 me bhi x1 ka extension hoga aur jitna A Block neeche jayega to wo l3 ke through conncected hai jiski wajah se l4 ko bhi x1 uor aana chahiye fir wo x2 upr kyu aa rha hai?
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Maths doubt

Is this formula valid for homogenous pair of lines only? Or general 2deg too?
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gravitation

we know the formulas for gravitational field strength and gravitational field strength on the axis of a ring. in this case are ring and particle/pt in the same plane ?? acc to me it isnt. how to derive for same plane ?...

Physics Geometry Doubt

How is r = 1/root3 this is an equilaterl Triangle with side 2 and that point C is the centroid...
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Rotation ans doubt

i am not getting the ans what did i do wrong
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Basic Rotaton Question

i cant understand can someone explain first of all in slipping wont there be friction? so a = g(sin0 - ucos0) 0 = thetha and i cant understand the formula they used in without slipping...
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Variable Mass

in this question why vdm/dt = ma?
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Chemical Kinetics

how do I even begin this question what should my mindset be when I try to approach such a question?...
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Nuclear physics (not exam related)

In the Chernobyl reactor, if the control rods were used to absorb/slow down the neutrons, then why can't we just use the stuff the rods were made out of to reduce the radiations of the dangerous areas? Like throw a chunk of that stuff in a radioactive area to reduce the rads.. will that work?

Capacitor

Capacitor ka basic sa doubt
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gravitation

a satellite goes along an elliptical path around the earth the rate of change of arc length a swept by the satellite is proportional to r^x . determine x

ph

amt of (nh4)2so4 to be added to 500 ml 0.1M nh4oh to prepare a buffer of ph 9.56. pka of nh4+ is 9.26 where am i going wrong...
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1d motion

Let's say a object travels distance h , with acc a starting from rest H = 1/2at^2 t = root [2ah] ...

Solutions chem

What did I do wrong q39
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WPE+ Circular

in this question Tmax = 5 Tmin so Tmin = mg/5 at highest position T is giving centripetal acc mg/5 = mv2/r v2 = gr/5 = 2...
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ionic

in which of the following case(s) solubility of ch3cooag would be less than that in pure water at 25 deg celsius
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