one moleculetwo moleculesone moletwo moles of H2(g) reacts with one moleculetwo moleculesone moletwo moles of F2(g) to form one moleculetwo moleculesone moletwo moles of HF(g).

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?