C2H4 + O2 = CO2 + H2O Please help asap with this problem! its time quiz and i don't know what i'm doing. only answer if you know please

As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "