We add a 1.20-g sample of dry ice to a 755-mL flask containingnitrogen gas at a temperature of 25.0°C and a pressure of725 mmHg. The dry ice sublimes (converts from solid to gas) andthe mixture returns to 25.0°C. What is the total pressure in theflask?

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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.