A sealed flask contains a mixture of hydrogen, oxygen, and nitrogen gases. The gases 11 A exert a total pressure of 92.6 kPa. If the partial pressure of the hydrogen and the nitrogen are 31.2 kPa and 18.7 kPa respectively, what would be the partial pressure exerted by the oxygen? A 42.7 kPa B 101 kPa C 142.5 kPa D 49.9 kPa

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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.