5. A sample of air inside an Erlenmeyer flask occupies 135 mL and has a pressure of 946.3 mmHg and a temperature of 95.1 °C. Calculate the mass of air (in grams) in the flask, assuming the average molar mass of air to be 28.6 g/mole.

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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.