In the mass spectrum of 2,6-dimethyl-4-heptanol there are prominent peaks at m/z 87, 111, and 126. Propose reasonable structures for these fragment ions.

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth

If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?