Most stable arenium ion generated during the EAS bromination of toluene.    

The systematic name of the compound N2O4 is _______.

According to the solubility rules, which of these compounds is insoluble in water? 

Which molecule generates a major result that possesses more 1H NMR signals upon exposure to Br2/FeBr3 (followed by workup). 1) t-butylbenzene 2) benzaldehyde

What is the oxidation number of nitrogen in the nitrate ion, NO3–?

The systematic name of the compound S2Cl2 is _______.

What is the formal charge on the nitrogen atom in this structure?   (Hint: Formal Charge = valence electrons – # of bonds – # of unshared electrons)

clc; clear;x = 5;while x > 4   for jj = 1:2:5      if x == 5         break;      else         fprintf(‘%g’, x);         x = x – 4;      end   end   x = x + 3;end

What is the net ionic equation for the following reaction? BaCl2(aq) + Na2CO3(aq) → BaCO3(s) + 2 NaCl(aq)

Consider the spectrum and answer the following: (note: the unlabeled signal at ~6ppm is a multiplet) a) Which molecule agrees with the provided 1H NMR spectrum (below)? [nmr] b) Which molecule should have the most deshielded non-aromatic singlet? [nmr1] c) What will be the splitting pattern of the most deshielded non-aromatic signal in molecule 1? [t1] d) Which molecule after undergoing Friedel-Crafts methylation provides a molecular formula of C10H10O but does not show any change in the total number of signals in the 1H NMR, but does show a change in chemical shifts? [FC]