Given the following equation: 2 k3n > 6 k + n2 how many moles of n2 can be produced by letting 12.00 moles of k3n react?

The answer will be 12 nitrogen or N2 will be produced because if you changed the coefficient to 12 on the reactant side and distribute, the nitrogen would be 12 when distributed and what happens on one side has to equal to the other side, which is the product side.

The pH 7, suggests neutral state, that is, no proton in the solution. Its composition is given in the attachment below.

At pH = 7, Lysine possess net charge of +1. The isoelectric point of lysine is 9.75. Thus, its shows +1 net charge, it is actually a fractional charge.