Recent content by frozonecom

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    Deriving Equation Relating Angle of Incidence to the Angle of Refracti

    Yes I did that too, and I've got a linear graph. However, a part of the experiment was to analyze graphs of θ2 vs θ1 too. It's been giving me a hard time. I know that the graph of that one isn't perfectly linear but our instructor advised us to use linear regression on our data. Now it was...
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    Deriving Equation Relating Angle of Incidence to the Angle of Refracti

    I got Θ2/Θ1 = [arcsin((sinΘ1)/n2)]/Θ1 However, is this really it? Is there no way I can arrive at an expression wherein Θ1 and Θ2 would not appear in the right hand side of the equation? I've tried doing it in a calculator. I know I'm working with angles to pi/2. However, as you said, sin...
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    Deriving Equation Relating Angle of Incidence to the Angle of Refracti

    Homework Statement Derive an equation relating the angle of incidence and the angle of refraction as light travels from air to glass. Do it in the form of Θ2/Θ1 = expression Homework Equations I think the equation to use here is Snell's law. Right? n1sinΘ1 = n2sinΘ2 n1 = nair =...
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    Theory or Reality - Acid/base trends on the periodic table

    No, even if it is on the right side of the periodic table, it is classified as a metal. Most metal oxides are basic. Also, insoluble is a very confusing term. I guess what wikipedia wanted to say is that it is /sparingly soluble/, meaning it does dissolve in water, but only to a minimum, often...
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    Selective Precipitation Chemistry Problem

    Oh. Truth be told, I was wacking my head finding a similar problem in textbooks & internet and like you said, it's concerned only on the final equilibrium concentration of an ion. Thanks. I guess it's time to suggest to our institute to revise their laboratory manual, or at least their...
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    Selective Precipitation Chemistry Problem

    Anyone here who can help me? Our test didn't include anything like this (thank god), but anyway, I still feel the need to learn this kind of stuff. It looks simple but I still can't be certain about this. Please help.
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    Selective Precipitation Chemistry Problem

    Homework Statement A solution of AgNO_{3} is added to a solution containing 0.100 M Cl^{-} and 0.100 CrO_{4}^{2-}. What will be the concentration of the less soluble compund when the more soluble one begins to precipitate?Homework Equations Ksp AgCl = 1.82 x 10^{-10} Ksp Ag2CrO4 = 1.2 x...
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    Dividing by trigonometric functions

    Hello. I was doing a (simple) physics problem and stumbled with a mathematical problem. I was doing a projectile motions problem and I have set up my equation like this:Δx = Vi (cosθ) (t) 270= 25cosθ t t = 270 / (250cosθ) And this is where I'm having problems. I know from my high school trig...
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    Setting Up the Domain for Maxima/Minima Word Problems

    Good day everyone. I'm confused about how I SHOULD set up the domain of my function that models the word problem. Suppose I have a word problem that goes like this: A square box with no top is to be made by cutting congruent squares from the four corners of a square metal sheet and then...
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    Corrosion & pH: Explaining Observations of Iron Nail

    Homework Statement Hello guys. We are given a hypothetical data table and this is pretty much what it contains. It tells that when an iron nail is submerged in various aqueous solutions, the following observations were made. We are to give explanations to each why these things were observed...
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    Chemistry: The Central Science by Theodore L. Brown

    This is definitely the best book for problem-solving in general chemistry. It has sample exercises which has solutions and an additional problem where the solution is not shown but the answer is. I think it's really a great way to test if you understood the mechanism of solving such problems and...
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    Electrode Potentials and Redox reactions

    The reduction half reaction would be the negative one, and the oxidation half reaction would have the same magnitude as the standard reduction potential of lithium, but opposite in sign (so in short, positive). The values for the standard potential are usually listed in a table called standard...
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    Rusting of Nails in Salt Solutions

    I'm sorry if I'm bringing up to life a thread that has been long dead. Then, does that mean any solution, no matter acidic, neutral, or basic, that dissociates into ions (that is with electric charge) speeds up corrosion of iron?
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    New Good Books on Calculus and Analytical Geometry

    I have read many threads concerning many excellent books on calculus but not for analytical geometry. I can't seem to find any thread about good references for analytical geometry. I am taking the course analytical geometry and calculus in college and I need good book in both fields. I have...
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    Do Nematodes Really Have a Skeleton?

    Thanks for the answer!:)
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