Bsoton_MA
Bsoton_MA t1_ja50hf0 wrote
Reply to If the fuel that goes in car engines is extracted from hydrocarbons, which consist of only Hydrogen and Carbon, and those hydrocarbons react with Oxygen in the air (combustion reaction), to produce CO2 and H2O, why do we get a bad smell from car exhaust fumes if both gases are odorless? by Protoflare
Gasoline has a little bit of sulfur from petroleum. When sulfur combusts it forms sulfur dioxide which smells. A catalytic converter should prevent this, which is why it does not smell as bad as with one.
Edit: without —> with
Bsoton_MA t1_ja554yb wrote
Reply to comment by WazWaz in Water on Earth is not Constant. Why ? by ItsDivyamGupta
Your technically right. That Water (H2O) itself is lost. However living things also create water (vapor) to move, grow, think, or do anything really. Also burning things creates water vapor. The vapor will become water eventually.
Furthermore plants also use water to grow. this 5% you are talking about probably refers to the water that plant used to create new cells. This water can eventually become water by burning it.
Also, even if some water is lost forever and never becomes water again. The percentage is small. So small i fact that it does not really matter