Which statement best describes the use of a chemical indicator in a titration? It must be measured to the nearest 0.01 mL.
It must be colored in the acid solution.
It must measure pH directly at all pH values.
It must change color near the equivalence point.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.