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Physics: Post your doubts here!
This type of question has always been a disaster for me :p Can you write all the possible effects of changes to the apparatus? (The ones you said, and also other changes like moving the screen further, changing wavelength, changing slit separation, etc.) -
Physics: Post your doubts here!
Using laws of Kirchhoff, solve for the values of I1, I2 and I3. == I have got the concept for kirchhoff's law and stuff, but then this question is confusing for me. Please explain step by step. Thanks in advance. -
Chemistry: Post your doubts here!
Thanks for that. But then I don't want to "memorize" all the possible inorganic reactions, more likely I want a list with general product of different reactions. Like for example (I want this type for all of the reaction types), acid + base --> salt + water -
Chemistry: Post your doubts here!
I've got this doubt always in chemistry. Could someone post a complete list of types of reactions I must know (for AS Level Chemistry), such as that of acids and bases, carbonates, etc. Cause sometimes the question wants us to write the products of the reaction, and I'm not sure of the products... -
Chemistry: Post your doubts here!
MS Word + Screenshot + MS Paint + Tinypic.com :) -
Chemistry: Post your doubts here!
I kind of understood it myself, but my problem initially was that I didn't test each equation with this table. I thought I can get a straight answer. So if we draw a table like this we can figure it out: -
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Chemistry: Post your doubts here!
9 Two moles of compound P were placed in a vessel. The compound P was partly decomposed by heating. A dynamic equilibrium between chemicals P, Q and R was established. At equilibrium, x mol of R were present and the total number of moles present was (2 + x). What is the equation for this... -
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Chemistry: Post your doubts here!
Yes, but why? Please explain using understandable english and in full detail. Thanks (Btw I'm still confused about my previous question, asked a few pages back). -
Chemistry: Post your doubts here!
Ammonia is manufactured by the Haber Process, in an exothermic reaction. Assuming that the amount of catalyst remains constant, which change will not bring about an increase in the rate of the forward reaction... -
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Chemistry: Post your doubts here!
Bromine water is a test for presence of C=C double bonds in a compound. What happens is that the bromine water (Br2 molecule - brown color), gets decolourized (it means the solution becomes colorless). This is because of electrophilic addition reaction taking place, forming a colourless... -
Chemistry: Post your doubts here!
Yea, these (i.e. Concentrated H2SO4) are good dehydrating agents. -
Chemistry: Post your doubts here!
I just don't get it! Can you explain with a diagram or something? The addition of HCl to both sides doesn't make sense to me. -
Chemistry: Post your doubts here!
I don't get this part :| I've written the previous equations, and everything. But I don't get why should I add Hcl to both sides? Can you explain a bit further, maybe write an equation? Tnx. -
Chemistry: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w11_qp_21.pdf Question 3 (d). For normal hess's cycles I know how to do it (like from formation or combustion), but in this question I don't get what these enthalpy changes are !! -
Chemistry: Post your doubts here!
I'm confused because the question says at equilibrium, 70% of reactants (means all of them) gets converted to products, but I'm only taking no. of moles of one of the reactants.??