6li + n2 2li3n

if 12 mol of lithium were reacted with excess nitrogen gas, how many moles of lithium nitride would be produced?

4.0 mol
6.0 mol
12 mol
36 mol

Answer : The correct option is, 4.0 mole

Explanation : Given,

Moles of lithium = 12 mole

The given balanced chemical reaction is:

By the stoichiometry we can say that, 6 moles of Li react with 1 mole of to give 2 moles of

As, 6 moles of lithium react to give 2 moles of lithium nitride

So, 12 moles of lithium react to give moles of lithium nitride

Therefore, the number of moles of lithium nitride produced will be 4.0 mole.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

: )

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.