For 10 points, name this gas that burns with hydrogen to form water, and which we breathe for use in respiration.
It's not NaCl, but this compound is the primary product released by burning chlorate candles. Manganese precipitates out of a solution containing potassium iodide, determining the amount of this compound dissolved in water, in the Winkler Test. This compound is normally found in its triplet state, which makes it paramagnetic. A (*) glowing splint is most often used to test for this gas. This is the most stable form of the first chalcogen, which has other allotropes like ozone. For 10 points, name this gas that burns with hydrogen to form water, and which we breathe for use in respiration.
It's not NaCl, but this compound is the primary product released by burning chlorate candles.
diatomic oxygen [or O2; or oxygen gas]