Mixtures of helium and oxygen (called heliox) are used in scuba diving tanks to help prevent “the bends.” For a dive, 46 L He at 25º C and 1.0 atm and 12 L O2 at 25º C and 1.0 atm were pumped into a tank with a volume of 5.0 L. Calculate the partial pressure of each gas and the total pressure in the tank at 25º C. PTOT = 11.7 atm PHe = 9.3 atm PO2 = 2.4 atm

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Q: Part A At 25 °C phosphoric acid, H3PO4, has the following equilibrium constants: K = 7.5 x 10 3 What...

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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.