Question

now molecules: molecules of h₂ + molecules of o₂ → molecules of h₂o

Explanation:

Step1: Write the unbalanced equation

The reaction is \(H_{2}+O_{2}\to H_{2}O\).

Step2: Balance the oxygen atoms

We have \(O_{2}\) (2 oxygen atoms) on the left and \(H_{2}O\) (1 oxygen atom) on the right. To balance oxygen, put a 2 in front of \(H_{2}O\): \(H_{2}+O_{2}\to 2H_{2}O\).

Step3: Balance the hydrogen atoms

Now, on the right - hand side, we have \(2\times2 = 4\) hydrogen atoms from \(2H_{2}O\). On the left - hand side, we have \(H_{2}\). So, put a 2 in front of \(H_{2}\): \(2H_{2}+O_{2}\to 2H_{2}O\).

Answer:

2 molecules of \(H_{2}\)+1 molecule of \(O_{2}\to2\) molecules of \(H_{2}O\)