Question

how many oxygen atoms are in 30 molecules of dinitrogen tetroxide, n₂o₄?

Explanation:

Step1: Analyze the formula of \(N_2O_4\)

Each \(N_2O_4\) molecule contains 4 oxygen atoms.

Step2: Calculate the number of oxygen atoms

If there are 30 \(N_2O_4\) molecules, then the number of oxygen atoms is \(30\times4\).
\(30\times4 = 120\)

Answer:

120