How many grams of N2 are needed to make 444 g of NBr3 ?  N2   +   3 Br2   →   2 NBr3   +   44.0 kJ              The molar mass of NBr3 is 253.719 g and the molar mass of N2 is 28.013 g                        Blank 1. Fill in the blank, read surrounding text. mol NBr3                                                                                   (444 g NBr3)(–––––––––––––––––––––––––)  =  Blank 2. Fill in the blank, read surrounding text. mol NBr3

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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.