Fossil fuels form natural­ly from decaying plants and animals living in ancient seas millions of years ago. this is harvested as crude oil and it contains many hydrocarbons, or molecules that contain hydrogen and carbon in various lengths and structures. the refining process uses separation and a technique called conversion, to turn longer chain molecules such as in diesel fuel are broken into shorter ones forming gasoline.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.