4 ms·

https://en.m.wikipedia.org/wiki/Conservation_of_mass https://en.m.wikipedia.org/wiki/Conservation_of_mass

• Fezzik 6y ago
  That does not tell us anything though. The fact is that “The largest part of most combustion gas is nitrogen (N2), water vapor (H2O) (except with pure-carbon fuels), and carbon dioxide (CO2) (except for fuels without carbon); these are not toxic or noxious (although water vapor and carbon dioxide are greenhouse gases that contribute to global warming). A relatively small part of combustion gas is undesirable, noxious, or toxic substances, such as carbon monoxide (CO) from incomplete combustion, hydrocarbons (properly indicated as CxHy, but typically shown simply as "HC" on emissions-test slips) from unburnt fuel, nitrogen oxides (NOx) from excessive combustion temperatures, and particulate matter (mostly soot).” Emphasis added. https://en.m.wikipedia.org/wiki/Exhaust_gas https://en.m.wikipedia.org/wiki/Exhaust_gas