If the average pack contains 20 cigarettes and costs 6.28 per pack (per the cdc), how much would a person spend if they smoked 5500
cigarettes per year?
(round to the nearest whole dollar)

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?