A 4.0-liter rigid metal can is filled with nitrogen gas at 45 °C to a pressure of 1.125 atm. The can is then placed in a refrigerator until the temperature decreases to –10 °C. From a molecular standpoint, (i) explain why the pressure of the gas will change by being put in the refrigerator then (ii) calculate what the new pressure will be.

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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.