The government is considering the introduction of a carbon tax.

The import duties were so high that the price of the goods went up.

The government has decided to invest tax revenue in education and healthcare.

I plan to pay this year's income tax early.

When purchasing real estate, you need to pay stamp duty.

Phthalazine is a compound often used in organic chemistry.

In this experiment, we will observe the crystallization of naphthalene.

Naphthalene is a compound often used in organic chemistry.

In the organic chemistry experiment, we used phthalein as an indicator.

I was shocked when his duplicity became apparent.