omplete the following statement: A catalyst a. increases the activation energy. b. alters the reaction mechanism. c. increases the average kinetic energy of the reactants. d. increases the concentration of reactants. e. increases the collision frequency of reactant molecules.

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.

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world

In one or two grammatically correct sentences, write a definition for the term molecule geometry