The gas, carbon dioxide, is found in dry air at sea level at a concentration of 330. ppm. At a pressure of 747 mm Hg and a temperature of 24.4 °C, dry air contains about 2.51x1013 million molecules per cm3. The number of grams of carbon dioxide found in 1 cm3 of dry air at this temperature and pressure is 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.