One of the most commonly used varieties of plastic are polyurethanes. They are created from the reaction of raw polyols with isocyanates. A large variety of plastics can be acquired depending on the ...

THE structure of polyadenylic acid can be expected to have some influence on the availability of polar groups, such as the primary amino-group of the adenine base, for binding of hydrogen ions.

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...