Balance the follow equations
_N2+_H2 ->_NH3

N2 + 3H2 —> 2NH3

The coefficients are 1, 3, 2

Explanation:

N2 + H2 —> NH3

The equation can be balance by doing the following:

There are 2atoms of N on the left side and 1atom on the right. It can be balance by putting 2 in front of NH3 as illustrated below:

N2 + H2 —> 2NH3

Now, there are 6 atoms of H on the right side and 2 atoms on the left. It can be balance by putting 3 in front of H2 as shown below

N2 + 3H2 —> 2NH3

Now the equation is balanced.

The coefficients are 1, 3, 2

The answer to your question is pH = 9.5

Explanation:

Data

pOH = 4.5

pH = ?

pH measures the hydronium concentration [H₃O⁺]. The scale of pH goes form 0 to 14. If the solution has a pH from 0 to 6.9 the solution is an acid, if the pH = 7, the solution is neutral and if the pH goes from 7.1 to 14 the solution is an alkali,

Formula

                    pH + pOH = 14

-Solve for pH

                   pH = 14 - pOH

-Substitution

                   pH = 14 - 4.5

-Result

                  pH = 9.5