For 10 points, name this gas, symbolized CO2 (see oh two).
This substance is combined with organomagnesium (or-GAN-oh-mag-NEEZ-ee-um) bromides to give carboxylic (CAR-box-ILL-ick) acids. As a supercritical fluid, it is used to decrease the viscosity of crude oil. Ethanol and this substance are produced in the (*) fermentation of glucose by yeast. Its structure is predicted to be linear due to its two double bonds. In the presence of water, this triatomic substance is in equilibrium with carbonic acid. For 10 points, name this gas, symbolized CO2 (see oh two).
This substance is combined with organomagnesium (or-GAN-oh-mag-NEEZ-ee-um) bromides to give carboxylic (CAR-box-ILL-ick) acids.
{carbon dioxide} [or CO2 before it is read]