The following data was collected. Find the molar mass of the unknown gas. Mass of syringe, cap and nail (plunger fully inserted)     34.9000g Mass of syringe, cap, and nail (containing vacuum)        34.8292g Mass of syringe, cap and nail (filled with unknown gas)  34.8793 Temperature    26.5oC Barometer       767.7mmHg Volume            60.0mL

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Q: What is the molecular mass of this gas?  =______ g/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.