He started calculating to obtain the ratio of the two numbers.

This compound was newly discovered by scientists.

It's difficult to solve this formula.

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

What is this thing?

He continued his journey to find the truth.

First of all, we need to make a plan.

The study of organic compounds is an important field in chemistry.

This inorganic compound plays an important role in chemical reactions.

Sandwich compounds are being studied in a branch of chemistry.