In order to find the empirical formula of this compound, you must first calculate the ratio of elements.

The Wade-Giles romanization is often used to express the pronunciation of Chinese.

It's difficult to decipher this chemical equation.

We attended the cornerstone laying ceremony of the new building.

He used a familiar spirit to defeat the enemy.

We won the top prize at the award ceremony.

We attended our grandfather's funeral yesterday.

The closing ceremony of the Olympics was moving.

I learned how to calculate rational expressions in math class.

What is the molecular formula of this compound?