What is the function of phenolphthalein used in this acid-base titration?

Bose-einstein condensation occurs at what temperature?

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a