A mixture of CO2 and Kr weighs 37.6 g and exerts a pressure of 0.855 atm in its container. Since Kr is expensive, you wish to recover it from the mixture. After the CO2 is completely removed by absorption with NaOH(s), the pressure in the container is 0.293 atm. (a) How many grams of CO2 were originally present? (b) How many grams of Kr can you recover? (a) grams CO2: (b) grams Kr: 3. 8.

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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.