Dinitrogen difluoride gas is collected at 21.0 °C in an evacuated flask with a measured volume of 35.0 L. When all the gas has been collected, the pressure in the flask is measured to be 0.460 atm. Calculate the mass and number of moles of dinitrogen difluoride gas that were collected. Round your answer to 3 significant digits. mass: 8 mole: mol X S

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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.