In the given chemical equation, What is the missing coefficient to balance the equation?1 P4 + ___ O2 → 2 P2O5

To balance the given chemical equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The chemical equation is: 1 P4 + ___ O2 → 2 P2O5

Step 1: Balance the phosphorus (P) atoms first. There are 4 P atoms on the left side and 4 P atoms on the right side (since 2*2 = 4). So, phosphorus is already balanced.

Step 2: Balance the oxygen (O) atoms. On the right side, there are 10 O atoms (since 25 = 10). To balance the O atoms on the left side, we need to put a 5 in front of O2 (since 52 = 10).

So, the balanced chemical equation is: 1 P4 + 5 O2 → 2 P2O5

Therefore, the missing coefficient is 5.