How much is the calculation for this product?

He earned a doctorate in the field of applied science.

He is majoring in Sinology at university.

This dress is currently on sale for half price.

He is an expert in serology, working on research into infectious diseases.

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

Thermochemistry is a part of chemistry that deals with the reactions of heat and matter.

Thermochemistry is a branch of chemistry that studies the interaction of heat and matter.

He is majoring in logic.

We are planning to go to the science museum this weekend.