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  • I am trying to build a system of two connected chambers, one of which is also connected to a cuvette, so I can perform a spectrometry experiment with different concentrations of KNO3 solution. In its ...

  • I have been looking all over the internet for forcefield parameters for a fluorescent probe called NBD (nitrobenzoxadiazole). Here is an example of an NBD labeled fatty. I have so far only found para...

  • I watched a video on the construction of Burj Khalifa, Dubai. The construction engineers answered that they're using a special type of protection known as Cathodic protection to protect from the corro...

  • I need to calculate the angles between CCC, CCH, HCH in the following molecules: $H_2 CCH_2 $ , $H_2 CCCH_2 $ , $ H_2 CCCCH_2 $ . If I'm not mistaken, the Lewis structures of all of these molecules ...

  • I seek to put a layer of fluorine on a rotationally molded cross-linked polyethylene (XPE) plastic gasoline tank. I sell tanks and they will be more eco-friendly if I can accomplish this. I am an el...

  • I was looking up silica gel beads on wiki and noticed that some (and from experience most) are doped with a colouring agent to indicate that they have absorbed all that they can. The wiki page says ...

  • In my lecture notes for inorganic chemistry, it is stated that magnesium has high affinity for oxygen but is rather stable at room temperature in air. Can anyone explain why this is the case?

  • I'm doing exercises on hybridisation, and I was given this molecule (this is the facit): I'm wondering about this (electron deficient) oxygen atom. My intuition says it should be ${sp^2}$ like the ...

  • Why is it that the extent of racemisation is greater in $S_N 1$ reaction caried out using polar protic solvent but the racemisation is not as extensive if aprotic solvent is used although the carbocat...

  • I'm just wondering if anybody here knows of a Consumer-Report-like publication for lab equipment. Something that would give the specifics, as, for example, the flow rate of a distilling condenser, etc...

  • To me it seems like diatomic elements like $\ce{F2}$, $\ce{Cl2}$, etc. occur more prevalently than diatomic molecules with both, like $\ce{ClF}$. Is this the case, and if so, what causes diatomic ele...

  • I'm not sure whether the caffeine contained in otc caffeine pills is made synthetically or isolated from coffee and other plants, but if the latter is the case, is it likely that it contains the chemi...

  • How do you calculate how much energy is needed to break a water molecule into its constituent atoms? note This is not homework. I just want to know what is required to get hydrogen out of water.

  • I'm confused, because it seems like Huckel's rule is satisfied and that the molecule should be aromatic. Where am I going wrong here?

  • What is chemistry considered the study of? Stop forgetting my accounts...

    I am asking this because I have a review question in my physics class which gives me a multiple-choice question. I have heard and seen elsewhere on the internet (such as wikipedia) that chemistry is ...

  • There is a group R an organic group connected to either Oxygen or Nitrogen.R is such a group which has almost zero electronic effects(Resonance effect and inductive effect).I want to ask if N or O are...

  • A 100 ml solution of NaOH has a pH of 13. What volume of water, in mL must be added to change the pH to 11? My Steps: So, begin by calculating conc. of [OH-] for pH 13. Then find the moles by con...

  • According to Molecular Orbital Theory(MOT), the bond order of CO is 3. When CO+ is formed, bond order decreases to 2.5 and thus bond length should increase. However, the bond length of CO+ is found to...

  • $\Delta H$ for the reaction below is -126 KJ $$\ce{2Na2O2(s) + 2 H2O(l) ->4 NaOH(s) + O2 (g)}$$ What is the amount of heat released by the reaction of 25.0 gram of $\ce{Na2O2}$ with water?

  • Under Basic conditions a michael addition reaction can be used to convert compound A into Product C. Explain why no Robinson Annelation cyclic product is observed? Compound A Product C I have wor...