Question

what is the missing coefficient to make a balanced equation? p₄ + ?o₂ → p₂o₃ be sure the equation is balanced before entering the coefficients. 1 2 3 5

Explanation:

Step1: Balance phosphorus atoms

We have 4 phosphorus atoms in \(P_4\) on the left - hand side. In \(P_2O_3\) on the right - hand side, to balance the phosphorus atoms, we need 2 moles of \(P_2O_3\) since \(2\times2 = 4\) (phosphorus atoms). So the equation becomes \(P_4+?O_2
ightarrow2P_2O_3\).

Step2: Balance oxygen atoms

In \(2P_2O_3\), the number of oxygen atoms is \(2\times3=6\). On the left - hand side, in \(O_2\), to get 6 oxygen atoms, we need 3 moles of \(O_2\) because \(3\times2 = 6\). So the balanced equation is \(P_4 + 3O_2
ightarrow2P_2O_3\).

Answer:

3