For the reaction

6li+ n2 —> 2li3n

what us the maximum amount of li3b which could be formed from 7.87 mol of li and 4.37 mol of n2?

answer in units of mol.

Mass = 90.6 g

2.6 mol

Explanation:

Given data:

Number of moles of Li = 7.87 mol

Number of moles of N = 4.37 mol

Mass of Li₃N = ?

Solution

Chemical equation:

6Li + N₂   →   2Li₃N

Now we will compare the moles of nitrogen and lithium with Li₃N.

                            N₂              :          Li₃N

                             1               :             2

                           4.37           :          2×4.37 =8.74

                            Li               :               Li₃N

                             6               :                2

                            7.87           :             2/6×7.87 = 2.6 mol

Mass of Li₃N:

Mass = number of moles × molar mass

Mass = 2.6 mol × 34.83 g/mol

Mass = 90.6 g

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chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.