He is an expert in computer science.

The Ministry of Education is responsible for Japan's educational policy.

My father is an expert in otolaryngology.

The concept of chemical equivalent is essential for understanding chemical reactions.

My company specializes in the manufacture of fine chemicals.

Stoichiometry is a method for calculating the amount of substances in a chemical reaction.

No chemical flavoring is used in this ramen at all.

UNESCO is an international organization that promotes the development of education, science, and culture around the world.