carbon dioxide
To remove burnt sugar from a pan, fill the pan with water and bring it to a boil. Then, add some dish soap and let it sit for a few hours. Afterward, scrub the pan with a scouring pad to remove the burnt sugar residue.
None, no gas is given off.
Unused Sugar/Energy (glucose) is stored in fat cells, which are burnt off when the energy within them is needed.
Ammonia gas (NH3) is given off when ammonia solution is heated.
hydrogen eg:Na+HCl------>NaCl+H2
Hydrogen gas is given off when magnesium reacts with sulfuric acid.
Carbon Dioxide is given off. (CO2)
carbon dioxide gas
-_-
Hydrogen gas.
Oxygen gas
Hydrogen gas is always given off when an acid solution is electrolyzed.