The compound Mg(ClO3)2 decomposes when heated according to the equation below. Mg(ClO3)2 (s) ➝ MgCl2 (s) + 3 O2 (g) An impure sample of material contains a small amount of Mg(ClO3)2 . The sample is heated and the gas produced collected by downward displacement of water. A total of 377.1 ml of gas is collected at a temperature of 20.0ºC when the atmospheric pressure is 740.0 torr. [The vapor pressure of water at 20.0ºC is 17.54 torr.] Calculate the number of grams of Mg(ClO3)2 present in the impure sample. Grams of Mg(ClO3)2 : Answer in grams

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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.