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)

5500 / 20 = 275 (this is the amount of cigarette packets bought over the course of a year)

275 * 6.28 = 1727

Therefore, the person would spend $1727 on cigarettes In a year. :)

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.

Outermost (valence) electrons