Calcium carbonate, CaCO3 (s), the principal component in limestone, decomposes upon heating to form CaO (s) and CO2 (g). A sample of CaCO3 is decomposed and the CO2 is collected in a 250 mL flask. After decomposition is complete, the gas has a pressure of 1.3 atm at a temperature of 31 °C. How many moles of CO2 gas were generated? O 1.4 × 10² mol O 1.3 × 102 mol O 1.3 × 101 mol O 5.7 × 10-1 mol

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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.