Using the diagram of a Born-Haber cycle shown below, identify what is represented by 1.

A sulphuric acid solution containing per liter of the solution has a density of . (Note:  ; ). Calculate the molarity.

Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide according to the equation:
3NO2(g)+H2O(l)→2HNO3(l)+NO(g)

Suppose that 4.5 mol NO2NO2 and 0.40 mol H2OH2O combine and react completely. Which reactant is in excess?

Give the IUPAC name for each of the following

Why do we use molality rather than molarity in our concentration unit in a freezing point depression experiment.

          NH₄Cl(s)  NH₃(g) + HCl(g)

The equilibrium constant, K_p, for the reaction is: