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The ratio of the mass of O to the mass of N in N_{2}O_{3} is 12:7. Another binary compound of nitrogen has a ratio of O to N of 16:7.

What is the ratio of O to N in the next member of this series of compounds?

We’re being asked to **determine the ratio of O to N in the next member of the given series of compounds**.

We’re given the ratio of oxygen (O) to nitrogen (N) by mass in **dinitrogen trioxide (N _{2}O_{3})** is 12:7.

Furthermore, we are given a compound with a ratio of oxygen (O) to nitrogen (N) by mass of 16:7.

According to the **Law of Multiple Proportions**, when two elements (A & B) form different compounds, the masses of element B that combine with 1 g of A are a **ratio of whole numbers**.

**Given:**