What poisonous gas is found in the exhaust fumes of car engines?

The toxic gar expelled from the reaction between gasoline and oxygen in the vehicle's engine is both Carbon dioxide and monoxide

The poisonous gases found in the exhaust fumes of car engines are the products of combustion which are carbon dioxide and carbon monoxide. They are known to be toxic and carcinogenic. Hope this answers the question. Have a nice day.

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.

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)