Need helped for this

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Give the set of reactants (including an alkyl halide and a nucleophile) that could be used to synthesize the following ether: draw the molecules on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars, including charges where needed. ch3ch2och2ch2chch3 | ch3

Will mark brainliest how many electrons can be held in the energy level n = 4?