Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. Suppose that the volume of a particular sample of Cl2 gas is 8.70 L at 895 torr and 24 °C. [a] How many grams of Cl2 are in the sample? [b] What volume will the Cl2 occupy at STP? [c] At what temperature will the volume be 15.00 L if the pressure is 8.76 × 102 torr? [d]  At what pressure will the volume equal 5.00 L if the temperature is 58 °C?

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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.