Top new questions this week:
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In my book (Bruice) it is specified how it is possible to compare the pKa of two substances to understand who acts as an acid and who as a base. Here’s the example in the book: $\ce{NH3 + H2O}$. $\…
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I’m very confused on how to calculate the [A-]/[HA] value, given the fact that my dilution series uses buffers at various pH values with the same indicator (supplied at the same concentration to each …
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I tried looking for these arrows online and in my notes but I couldn’t find anything. Is Pd actually bonded to something?
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I’m helping my son build a dye-sensitized solar cell for his school project according to the directions on homemade-circuits.com. We’re currently in the process of gathering the necessary materials. …
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I have formatted my data below in a table so my issue is more clear and asked this question again, I apologize for any confusion. I don’t understand why the low values of Q are inaccurate while the …
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If I could somehow reliably count all the carbon, nitrogen, hydrogen, oxygen, and phosphorus atoms in the observable universe, what number would I come up with?
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I prepared a solution of n-benzoyl L-tyrosine p-nitroanilide (BTNA) in dimethyl sulfoxide for use in an enzymatic assay. However, mixing it with a solution of phosphate buffer produced a color change …
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Greatest hits from previous weeks:
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This is a 10th-grade question. The melting point of a substance decreases with increase in presence of impurities in it. The melting point of ice decreases from 0 °C to -22 °C on mixing salt in it …
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I don’t understand how the freezing point of a substance is the same temperature as the melting point of the same substance. For example, if liquid water freezes at 0 °C how can ice also melts at 0 °…
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I want an high-school level answer. What I mean with “valence electrons” is the outermost electrons in that atoms’ electronic arrangement? For example, 3 in an atom with an electronic arrangement of 2,…
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Was looking at Henry’s law and Raoult’s law constants and there seemto be lots of equations involved. Henry’s law involves partial pressure and the latter involves the vapor pressure. Wondering what …
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In laboratory setting, is there a difference between glycerin and glycerol? There are some conflicting info on this topic.
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I used to use the explanation that $s$ orbitals penetrate better than $p$ orbitals, however, could the explanation be that $3s$ is shielding the $3p$ in aluminum?
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How to calculate it? I know that it depends on the coordination compound and the number of electrons present in t2g and eg orbitals and the final answer is expressed in terms of crystal field …
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Can you answer these questions?
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To my knowledge, compared to oled, elqd displays will be very cheap to mass produce using ink jet printing process. Quantum dots can have very narrow FWHM which allows displays to have wider color …
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When a solute is added to a solvent, the total volume of the solution is lower than that of the solute+solvent. A good example of this is the addition of salt to water, causing an overall volume …
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I have a hard time understanding the difference between the differential yield and overall selectivity of a reaction. Levenspiel, Chemical Reaction Engineering writes: For convenience in evaluating …
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