A self-contained underwater breathing apparatus uses canisters containing potassium superoxide. The superoxide consumes the CO₂ exhaled by a person and replaces it with oxygen. 4 KO2 (s) + 2 CO2 (g) → 2 K₂CO3 (s) + 3 O2(g) What mass of KO2, in grams, is required to react with 12.4 L of CO2 at 22.0°C and 872 mm Hg? Mass= 9

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.