Recent content by DanL

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    Schools Graduate School in Chemical Physics

    Hey thanks for the replies to my 7 month old thread guys! I just figured I'd give an update. Rather than inorganic chemistry and organometallic/transition metal chemistry, I decided to take modern physics and a 400 level classical mechanics course. I'll be applying to graduate schools extremely...
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    Schools Graduate School in Chemical Physics

    I'm currently a junior at large state school and am a biochemistry major. I started college in a cell biology major, then realized how much I hated cell biology classes (although I remain fascinated by the chemical reactions and complex chemical structure in living things) and how much I loved...
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    Picking up calculus again after 2 years?

    I'm a biochemistry major (chemistry focused, not biology focused program) and I have just completed the fall semester of my junior year. I completed my first semester of physical chemistry (chemical thermodynamics) and I really enjoyed the mathematics. My major only requires calculus 1 and 2...
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    Why amino acids as Zwitterons in solid state and ph neutral?

    The carboxyl group on an amino acid generally has a pKa of around 2, while the amino group has a pKa around 9. Remember, when pH=pKa, the ionizable group exists half in its protonated form, and half in its deprotonated form. The deprotonated form of the carboxyl group is COO-; the deprotonated...
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    Pursuing a PhD in Chemical Biology?

    When I started college, I was a biotechnology major. I found this major be a dumbed down version of molecular and cellular biology, so I decided I wanted to switch out of it and major in biochemistry and molecular biology focusing in biochemistry, the problem was that I had already taken two...
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    Phenylacetic acid to sodium phenyl acetate

    Add sodium hydroxide.
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    Adiabatic Expansion: Constant pressure and temperature

    As a gas expands or contracts adiabatically, although q=0, the temperature changes as a result of the particles doing work on the surroundings, so there is a change in internal energy equal to the work done by or to the system. U is only dependent on the kinetic energies of the molecules of the...
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    Algebra Based Physics vs. Calculus Based Physics

    Correction: Algebra based physics is not meant for a gen-ed class, there are dumbed down versions of the standard algebra based physics courses meant to count towards gen-ed requirements for non-science or engineering majors. Algebra based physics is typically something meant for life science...
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    Algebra Based Physics vs. Calculus Based Physics

    Yeah it's pretty silly, and if I would have known this, in hindsight I would have taken calculus-based physics, especially since I was really good at calculus.
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    Algebra Based Physics vs. Calculus Based Physics

    Specifically which ideas and concepts in physics require calculus in order to gain a serious understanding? I wouldn't mind learning these concepts on my own next summer when I have free time.
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    Algebra Based Physics vs. Calculus Based Physics

    I'm taking physical chemistry this fall semester, which is a calculus based course. I have taken calculus 1 and 2 and received A's in them both. Do you think this is enough?
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    Algebra Based Physics vs. Calculus Based Physics

    Don't everyone answer at once.
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    Algebra Based Physics vs. Calculus Based Physics

    When I entered college as a freshman, I was in a biotechnology major, which was one of the less rigorous science majors offered at the university. It required only algebra based physics. I took classical mechanics spring semester freshman year, and I took electricity, magnetism, light, and...
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    Is it a ionic or a covalent bond?

    For the Grignard reagent, the Mg-Cl bond is covalent, but the Mg-CH3 bond is ionic with the carbon carrying the negative charge and the Mg-Cl carrying the positive charge. This allows the lone pair on the carbanion to attack sites on other molecules containing a partial positive (such as carbonyls).
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    I would like to work on an in-depth physics project

    I know Grignard reagents (RMgX) react with CO2 to form carboxylates. I'm not sure if this is an economically feasible CO2 scrubbing solution though. You could set up an experiment to bring a gaseous solution containing a known amount of CO2 through an impinger containing a grignard reagent...