A sample of helium gas at a pressure of 1.02 atm and a temperature of 22.0°C, occupies a volume of 13.8 L. If the gas is allowed to expand at constant temperature to a volume of 21.4 L, the pressure of the gas sample will be A sample of helium gas at a pressure of 817 tor and a temperature of 22.0°C, occupies a volume of 590. mL. If the gas is allowed to expand at constant temperature until its pressure is 532 torr, the volume of the gas sample 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.