Which is a pure substance? soda gasoline salt water carbon dioxide

(D) Carbon dioxide

A pure can be not be broken down into its constituents by physical means. A pure substance is made up of the same kind of atom or atoms. Carbon dioxide is a pure substance and cannot be broken into its constituents by physical means.

-Carbon dioxide

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.

diaria maybe go see a doctor about that